Registration No. 333-             

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form S-1

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

Calumet Specialty Products Partners, L.P.

(Exact Name of Registrant as Specified in Its Charter)

2780 Waterfront

Pkwy E. Drive, Suite 200

Indianapolis, Indiana 46214

(317) 328-5660

(Address, Including Zip Code, and Telephone Number, Including Area Code, of Registrant’s Principal Executive Offices)

R. Patrick Murray, II

2780 Waterfront

Pkwy E. Drive, Suite 200

Indianapolis, Indiana 46214

(317) 328-5660

(Name, Address, Including Zip Code, and Telephone Number, Including Area Code, of Agent for Service)

       Approximate date of commencement of proposed sale to the public: As soon as practicable after this Registration Statement becomes effective.

       If any of the securities being registered on this form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box.     o

       If this form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.     o

       If this form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.     o

       If this form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.     o

       If delivery of the prospectus is expected to be made pursuant to Rule 434, please check the following box.     o

PROSPECTUS

6,400,000 Common Units

Calumet Specialty Products Partners, L.P.

Representing Limited Partner Interests

       This is the initial public offering of common units representing limited partner interests in Calumet Specialty Products Partners, L.P. We intend to distribute to each common unit the minimum quarterly distribution of $0.45 per quarter, or $1.80 per year, to the extent we have sufficient cash from operations after establishment of cash reserves and payment of fees and expenses. The common units are entitled to receive the minimum quarterly distribution before any distribution is paid on the subordinated units initially held by affiliates of our general partner.

       Prior to this offering, there has been no public market for the common units. It is currently estimated that the initial public offering price per common unit will be between $         and $         . We intend to apply to have our common units quoted on the NASDAQ National Market under the symbol “CLMT.”

       See “Risk Factors” on page 14 to read about factors you should consider before buying the common units.

       These risks include the following:

       Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

       We have granted the underwriters a 30-day option to purchase up to 960,000 common units on the same terms and conditions as set forth above to cover over-allotment of common units, if any.

       The underwriters expect to deliver the common units against payment in New York, New York on                    , 2005.

Goldman, Sachs & Co.

Prospectus dated                    , 2005.

       You should rely only on the information contained in this prospectus. We have not, and the underwriters have not, authorized anyone to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and the underwriters are not, making an offer to sell these securities in any jurisdiction where an offer or sale is not permitted. You should assume that the information appearing in this prospectus is accurate as of the date on the front cover of this prospectus. Our business, financial condition, results of operations and prospects may have changed since that date.

       References in this prospectus to “Calumet Specialty Products Partners,” “we,” “our,” “us” or like terms, when used in a historical context, refer to the assets of Calumet Lubricants Co., Limited Partnership and its subsidiaries that are being contributed to Calumet Specialty Products Partners, L.P. and its subsidiaries in connection with this offering. When used in the present tense or prospectively, those terms refer to Calumet Specialty Products Partners, L.P. and its subsidiaries. References in this prospectus to “our general partner” refer to Calumet GP, LLC.

       For a description of additional restrictions and factors that may affect our ability to make cash distributions, please read “Cash Distribution Policy and Restrictions on Distributions.”

The amount of cash we have available for distribution to unitholders depends primarily on our cash flow and not solely on profitability.

       You should be aware that the amount of cash we have available for distribution depends primarily upon our cash flow, including cash flow from financial reserves and working capital borrowings, and not solely on profitability, which will be affected by non-cash items. As a result, we may make cash distributions during periods when we record losses and may not make cash distributions during periods when we record net income.

The assumptions underlying our estimate of cash available for distribution that we include in “Cash Distribution Policy and Restrictions on Distributions” are inherently uncertain and are subject to significant business, economic, financial, regulatory and competitive risks and uncertainties that could cause actual results to differ materially from those estimated.

       Our estimate of cash available for distribution for the twelve months ending December 31, 2006 set forth in “Cash Distribution Policy and Restrictions on Distributions” is based on assumptions that are inherently uncertain and are subject to significant business, economic, regulatory and competitive risks and uncertainties that could cause actual results to differ materially from those estimated. If we do not achieve the estimated results, we may not be able to pay the full minimum quarterly distribution or any amount on the common units or subordinated units, in which event the market price of the common units may decline materially.

       The amount of available cash we need to pay the minimum quarterly distribution for four quarters on the common units, the subordinated units and the general partner interest to be outstanding immediately after this offering is approximately $46.2 million. Our pro forma cash available for distribution generated during the year ended December 31, 2004 would have been sufficient to allow us to pay approximately 75.2% of the minimum quarterly distribution on the common units and none of the minimum quarterly distribution on the subordinated units. Our pro forma cash available for distribution generated during the twelve months ended June 30, 2005 would have been sufficient to allow us to pay the full minimum quarterly distribution on the common units and approximately 14.7% of the minimum quarterly distribution on the subordinated units. For a calculation of our ability to make distributions to unitholders based on our pro forma results for 2004 and the twelve-month period ended June 30, 2005, and for an estimate of our ability to pay the full minimum quarterly distributions on the common and subordinated units and the 2% general partner interest for the twelve-month period ending December 31, 2006, please read “Cash Distribution Policy and Restrictions on Distributions.”

Refining margins are volatile and currently at historical highs, and a reduction in our refining margins will adversely affect the amount of cash we will have available for distribution to our unitholders.

       Our financial results are primarily affected by the relationship, or margin, between our specialty products and fuel prices and the prices for crude oil and other feedstocks. The cost to acquire our feedstocks and the price at which we can ultimately sell our refined products depend upon numerous factors beyond our control. Historically, refining margins have been volatile, and they are likely to continue to be volatile in the future.

       A widely used benchmark in the fuel products industry to measure market values and margins is the “3/2/1 crack spread.” The 3/2/1 crack spread refers to the margin that would accrue from the simultaneous purchase of West Texas Intermediate crude oil and the sale of refined petroleum

       The price at which we sell specialty products, fuel and other refined products is strongly influenced by the commodity price of crude oil. Generally, an increase or decrease in the price of crude oil results in a corresponding increase or decrease in the price of specialty products, fuel and other refined products. However, if crude oil prices increase, our operating margins will fall unless we are able to pass along these price increases to our customers. While we have generally been able to pass on the costs associated with increased crude oil prices to our specialty product customers in the past, the increase in selling prices typically lags the rising cost of crude oil for specialty products. It is possible we may not be able to pass on all or any portion of the increased crude oil costs to our customers. Although we purchase forward crude oil supply contracts, enter into forward product agreements to hedge excess inventories and hedge our refined product margins to mitigate our commodity risk, we will not be able to eliminate this risk.

Because of the volatility of crude oil and refined products prices, our method of valuing our inventory may result in decreases in net income.

       The nature of our business requires us to maintain substantial quantities of crude oil and refined product inventories. Because crude oil and refined products are essentially commodities, we have no control over the changing market value of these inventories. Because our inventory is valued at the lower of cost or market value, if the market value of our inventory were to decline to an amount less than our cost, we would record a write-down of inventory and a non-cash charge to cost of sales. In a period of decreasing crude oil or refined product prices, our inventory valuation methodology may result in decreases in net income.

The price volatility of fuel and utility services may have a material adverse effect on our earnings, profitability and cash flows.

       The volatility in costs of fuel, principally natural gas, and other utility services, principally electricity, used by our refinery and other operations affect our net income and cash flows. Fuel and utility prices are affected by factors outside of our control, such as supply and demand for fuel and utility services in both local and regional markets. Natural gas prices have historically been volatile. For example, daily prices as reported on the New York Mercantile Exchange (“NYMEX”) ranged between $4.57 and $8.75 per million British thermal units, or MMBtu, in 2004. During the first six months of 2005, these prices ranged between $5.79 and $7.75 per MMBtu. Typically, electricity prices fluctuate with natural gas prices. Future increases in fuel and utility prices may have a material adverse effect on our results of operations. Fuel and utility costs constituted approximately 48.1% and 41.3% of our total operating expenses included in cost of sales for the year ended December 31, 2004 and the six months ended June 30, 2005, respectively.

Our hedging activities may have a material adverse effect on our earnings, profitability, cash flows and financial condition.

       We utilize derivative financial instruments related to the future price of crude oil, natural gas and crack spreads with the intent of reducing volatility in our cash flows due to fluctuations in

       The extent of our commodity price exposure is related largely to the effectiveness and scope of our hedging activities. For example, the derivative instruments we utilize are based on posted market prices, which may differ significantly from the actual crude oil prices, natural gas prices or crack spreads that we realize in our operations. Furthermore, we have a policy to enter into derivative transactions related to only a portion of the volume of our expected production or fuel requirements and, as a result, we will continue to have direct commodity price exposure to the unhedged portion. For example, for the six months ended June 30, 2005, we settled swap and collar contracts on the 2/1/1 crack spread (which is the difference between the sum of the selling prices of one barrel of gasoline and one barrel of diesel fuel less the price of two barrels of crude oil, with all component pricing defined in the contracts) for 2.1 million barrels, which represented 54% of our actual fuels sales of 3.9 million barrels for the same period. Our actual future production or fuel requirements may be significantly higher or lower than we estimate at the time we enter into derivative transactions for such period. If the actual amount is higher than we estimate, we will have greater commodity price exposure than we intended. If the actual amount is lower than the amount that is subject to our derivative financial instruments, we might be forced to satisfy all or a portion of our derivative transactions without the benefit of the cash flow from our sale or purchase of the underlying physical commodity, resulting in a substantial diminution of our liquidity.

       As a result of these factors, our hedging activities may not be as effective as we intend in reducing the volatility of our cash flows, and in certain circumstances may actually increase the volatility of our cash flows. In addition, our hedging activities are subject to the risks that a counterparty may not perform its obligation under the applicable derivative instrument, the terms of the derivative instruments are imperfect, and our hedging policies and procedures are not properly followed. We cannot assure you that the steps we take to monitor our derivative financial instruments will detect and prevent violations of our risk management policies and procedures, particularly if deception or other intentional misconduct is involved.

If our general financial condition deteriorates, we may be limited in our ability to issue letters of credit which may affect our ability to enter into hedging arrangements or to purchase crude oil.

       If we experience a substantial deterioration in our general financial condition, it may affect our ability to issue letters of credit. We rely on our ability to issue letters of credit to enter into hedging arrangements in an effort to reduce our exposure to adverse fluctuations in the prices of crude oil, natural gas and crack spreads. We also rely on our ability to issue letters of credit to purchase crude oil feedstocks for our refineries. If, due to our financial condition or other reasons, we are limited in our ability to issue letters of credit or we are unable to issue letters of credit at all, we may be required to post substantial amounts of cash collateral to our hedging counterparties or crude oil suppliers in order to continue these activities, which would adversely affect our liquidity and our ability to distribute cash to our unitholders.

We depend on certain key crude oil gatherers for a significant portion of our supply of crude oil, and the loss of any of these key suppliers or a material decrease in the supply of crude oil generally available to our refineries could materially reduce our ability to make distributions to unitholders.

       We purchase crude oil from major oil companies as well as from various gatherers and marketers in Texas and North Louisiana. For the six months ended June 30, 2005, subsidiaries of Plains All American Pipeline, L.P. and Genesis Crude Oil, L.P. supplied us with approximately 67% and 14%, respectively, of our total crude oil supplies. Each of our refineries is dependent on one or

       To the extent that our suppliers reduce the volumes of crude oil that they supply us as a result of declining production or competition or otherwise, our financial results would be adversely affected unless we were able to acquire comparable supplies of crude oil on comparable terms from other suppliers, which may not be possible in areas where the supplier that reduces its volumes is the primary supplier in the area.

       A material decrease in crude oil production from the fields that supply our refineries, as a result of depressed commodity prices, lack of drilling activity, natural production declines or otherwise, could result in a decline in the volume of crude oil we refine. Fluctuations in crude oil prices can greatly affect production rates and investments by third parties in the development of new oil reserves. Drilling activity generally decreases as crude oil prices decrease. We have no control over the level of drilling activity in the fields that supply our refineries, the amount of reserves underlying the wells in these fields, the rate at which production from a well will decline or the production decisions of producers, which are affected by, among other things, prevailing and projected energy prices, demand for hydrocarbons, geological considerations, governmental regulation and the availability and cost of capital.

We are dependent on certain third-party pipelines for transportation of crude oil and refined products, and if these pipelines become unavailable to us, our revenues and cash available for distribution could be adversely affected.

       We depend upon third-party pipelines that provide delivery options to and from our refineries for the benefit of our customers. Each of our refineries is interconnected to pipelines that supply most of its crude oil and ship most of its refined fuel products to customers, such as pipelines operated by subsidiaries of TEPPCO Partners, L.P. and ExxonMobil Corporation. Since we do not own or operate any of these pipelines, their continuing operation is not within our control. If any of these third-party pipelines become unavailable to transport crude oil feedstock or our refined products because of accidents, government regulation, terrorism or other events, our results of operations and cash available for distribution could be adversely affected.

Distributions to unitholders could be adversely affected by a decrease in the demand for our specialty products.

       Changes in our customers’ products or processes may enable our customers to reduce consumption of the specialty products that we produce or make our specialty products unnecessary. Should a customer decide to use a different product due to price, performance or other considerations, we may not be able to supply a product that meets the customer’s new requirements. In addition, the demand for our customers’ end products could decrease, which would reduce their demand for our specialty products. Our specialty product customers are primarily in the industrial goods, consumer goods and automotive goods industries and we are therefore susceptible to changing demand patterns and products in those industries. Consequently, it is important that we develop and manufacture new products to replace the sales of products that mature and decline in use. Our business, results of operations, cash flows and margins could be materially adversely affected if we are unable to manage successfully the maturation of our existing specialty products and the introduction of new specialty products.

       Any sustained decrease in demand for fuel products in the markets we serve could result in a significant reduction in our cash flow, reducing our ability to make distributions to unitholders. Factors that could lead to a decrease in market demand include:

We could be subject to damages based on claims brought against us by our customers or lose customers as a result of the failure of our products to meet certain quality specifications.

       Our specialty products provide precise performance attributes for our customers’ products. If a product fails to perform in a manner consistent with the detailed quality specifications required by the customer, the customer could seek replacement of the product or damages for costs incurred as a result of the product failing to perform as guaranteed. A successful claim or series of claims against us could have a material adverse effect on our financial condition and results of operations and could result in a loss of one or more customers.

We are subject to compliance with stringent environmental laws and regulations that may expose us to substantial costs and liabilities.

       Our crude oil and specialty hydrocarbon refining and terminal operations are subject to stringent and complex federal, state and local environmental laws and regulations governing the discharge of materials into the environment or otherwise relating to environmental protection. These laws and regulations impose numerous obligations that are applicable to our operations, including the acquisition of permits to conduct regulated activities, the incurrence of significant capital expenditures to limit or prevent releases of materials from our refineries, terminal, and related facilities, and the incurrence of substantial costs and liabilities for pollution resulting both from our operations and from those of prior owners. Numerous governmental authorities, such as the EPA and state agencies, such as the Louisiana Department of Environmental Quality (“LDEQ”), have the power to enforce compliance with these laws and regulations and the permits issued under them, often requiring difficult and costly actions. Failure to comply with environmental laws, regulations, permits and orders may result in the assessment of administrative, civil, and criminal penalties, the imposition of remedial obligations, and the issuance of injunctions limiting or preventing some or all of our operations.

       There is inherent risk of incurring significant environmental costs and liabilities in the operation of our refineries, terminal, and related facilities due to our handling of petroleum hydrocarbons and wastes, air emissions and water discharges related to our operations, and historical operations and waste disposal practices by prior owners. We currently own or operate properties that for many years have been used for industrial activities, including refining or terminal storage operations. Although we used operating and disposal practices that were standard in the industry at the time, petroleum hydrocarbons or wastes have been released on or under the properties owned or operated by us. Joint and several strict liability may be incurred in connection with such releases of petroleum hydrocarbons and wastes on, under or from our properties and facilities. Private parties, including the owners of properties adjacent to our operations and facilities where our petroleum hydrocarbons or wastes are taken for reclamation or disposal, may also have the right to pursue legal actions to enforce compliance as well as to seek damages for non-compliance with environmental laws and regulations or for personal injury or property damage. We may not be able to recover some or any of these costs from insurance or other sources of indemnity.

       Increasingly stringent environmental laws and regulations, unanticipated remediation obligations or emissions control expenditures and claims for penalties or damages could result in substantial costs and liabilities, and our ability to make distributions to our unitholders could suffer as a result. Neither the owners of our general partner nor their affiliates will indemnify us for any environmental liabilities, including those arising from non-compliance or pollution, that may be discovered at, or arise from operations on, the assets they are contributing to us. As such, we can expect no economic assistance from any of them in the event that we are required to make expenditures to investigate or remediate any petroleum hydrocarbons, wastes, or other materials. Please read “Business — Environmental Matters.”

We are exposed to trade credit risk in the ordinary course of our business activities.

       We are exposed to risks of loss in the event of nonperformance by our customers and by counterparties of our forward contracts, options and swap agreements. Some of our customers and counterparties may be highly leveraged and subject to their own operating and regulatory risks. Even if our credit review and analysis mechanisms work properly, we may experience financial losses in our dealings with other parties. Any increase in the nonpayment or nonperformance by our customers and/or counterparties could reduce our ability to make distributions to our unitholders.

Our reconfiguration and enhancement of assets may not result in revenue increases and is subject to regulatory, environmental, political, legal and economic risks, which could adversely affect our business, operating results, cash flows and financial condition.

       One of the ways we may grow our business is through the reconfiguration and enhancement of our refinery assets. The construction of additions or modifications to our existing refineries involves numerous regulatory, environmental, political and legal uncertainties beyond our control and requires the expenditure of significant amounts of capital. If we undertake these projects, they may not be completed on schedule or at the budgeted cost, or at all. Moreover, our revenues may not increase immediately upon the expenditure of funds on a particular project. For instance, if we expand an existing refinery, the construction may occur over an extended period of time, and we will not receive any material increases in revenues until the project is completed.

       Our ability to grow depends on our ability to make acquisitions that result in an increase in the cash generated from operations per unit. If we are unable to make these accretive acquisitions either because we are: (1) unable to identify attractive acquisition candidates or negotiate acceptable purchase contracts with them, (2) unable to obtain financing for these acquisitions on economically acceptable terms, or (3) outbid by competitors, then our future growth and ability to increase distributions will be limited. Furthermore, even if we do make acquisitions that we believe will be accretive, these acquisitions may nevertheless result in a decrease in the cash generated from operations per unit.

       Any acquisition involves potential risks, including, among other things:

       If we consummate any future acquisitions, our capitalization and results of operations may change significantly, and you will not have the opportunity to evaluate the economic, financial and other relevant information that we will consider in determining the application of our funds and other resources.

Our refineries face operating hazards, and the potential limits on insurance coverage could expose us to potentially significant liability costs.

       Our refining activities are conducted at three refineries in northwest Louisiana. These refineries are our principal operating assets. Our operations are subject to significant interruption, and our cash from operations could be adversely affected, if any of our refineries experiences a major accident or fire, is damaged by severe weather or other natural disaster, or otherwise is forced to curtail its operations or shut down. These hazards could result in substantial losses due to personal injury and/or loss of life, severe damage to and destruction of property and equipment and pollution or other environmental damage and may result in curtailment or suspension of our related operations.

       We are not fully insured against all risks incident to our business. Furthermore, we may be unable to maintain or obtain insurance of the type and amount we desire at reasonable rates. As a result of market conditions, premiums and deductibles for certain of our insurance policies have increased and could escalate further. In some instances, certain insurance could become unavailable or available only for reduced amounts of coverage. If we were to incur a significant liability for which we were not fully insured, it could have a material adverse effect on our financial position and ability to make distributions to unitholders. We do not maintain business interruption insurance at our Princeton or Cotton Valley refineries, and our business interruption insurance at our Shreveport refinery will not apply unless a business interruption exceeds 60 days. We are also not insured for environmental accidents.

We are subject to strict regulations at many of our facilities regarding employee safety, and failure to comply with these regulations could adversely affect our ability to make distributions to our unitholders.

       The workplaces associated with the refineries we operate are subject to the requirements of the federal Occupational Safety and Health Act (“OSHA”) and comparable state statutes that regulate the protection of the health and safety of workers. In addition, the OSHA hazard communication standard requires that we maintain information about hazardous materials used or produced in our operations and that we provide this information to employees, state and local government authorities, and local residents. Failure to comply with OSHA requirements, including general industry standards, record keeping requirements and monitoring of occupational exposure to regulated substances, could adversely affect our ability to make distributions to our unitholders if we are subjected to fines or significant compliance costs.

We face substantial competition from other refining companies.

       The refining industry is highly competitive. Our competitors include large, integrated, major or independent oil companies that, because of their more diverse operations, larger refineries and stronger capitalization, may be better positioned than we are to withstand volatile industry conditions, including shortages or excesses of crude oil or refined products or intense price competition at the wholesale level. If we are unable to compete effectively, we may lose existing customers or fail to acquire new customers, which could have a material adverse effect on our results of operations and cash available for distribution to our unitholders. For example, if a competitor attempts to increase market share by reducing prices, our operating results and cash available for distribution to our unitholders could be adversely affected.

Our debt levels may limit our flexibility in obtaining additional financing and in pursuing other business opportunities.

       We have a significant amount of debt. After giving effect to this offering and the related transactions, we estimate that our pro forma total debt as of June 30, 2005 would have been approximately $147.2 million. Following this offering, we will continue to have the ability to incur additional debt, including the capacity to borrow up to $             million under our new senior secured revolving credit facility, subject to limitations in the credit agreement. Our level of indebtedness could have important consequences to us, including the following:

       Our ability to service our indebtedness will depend upon, among other things, our future financial and operating performance, which will be affected by prevailing economic conditions and financial, business, regulatory and other factors, some of which are beyond our control. If our operating results are not sufficient to service our current or future indebtedness, we will be forced to take actions such as reducing distributions, reducing or delaying our business activities, acquisitions, investments and/or capital expenditures, selling assets, restructuring or refinancing our indebtedness, or seeking additional equity capital or bankruptcy protection. We may not be able to effect any of these remedies on satisfactory terms, or at all.

Our new credit agreement will contain operating and financial restrictions that may restrict our business and financing activities.

       The operating and financial restrictions and covenants in our new credit agreement and any future financing agreements could restrict our ability to finance future operations or capital needs or to engage, expand or pursue our business activities. For example, we anticipate that our new credit agreement will restrict our ability to:

       Our ability to comply with the covenants and restrictions contained in our new credit agreement may be affected by events beyond our control, including prevailing economic, financial and industry conditions. If market or other economic conditions deteriorate, our ability to comply with these covenants may be impaired. If we violate any of the restrictions, covenants, ratios or tests in our credit agreement, a significant portion of our indebtedness may become immediately due and payable, and our lenders’ commitment to make further loans to us may terminate. We might not have, or be able to obtain, sufficient funds to make these accelerated payments. In addition, our obligations under our credit agreement will be secured by substantially all of our assets, and if we are unable to repay our indebtedness under our credit agreement, the lenders could seek to foreclose on our assets.

An increase in interest rates will cause our debt service obligations to increase.

       Borrowings under our new credit facilities will bear interest at floating rates. The rates are subject to adjustment based on fluctuations in the London Interbank Offered Rate (“LIBOR”). An increase in the interest rates associated with our floating-rate debt would increase our debt service costs and affect our results of operations and cash flow available for distribution to our unitholders. In addition, an increase in our interest expense could adversely affect our future ability to obtain financing or materially increase the cost of any additional financing.

Our business and operations could be adversely affected by terrorist attacks.

       Since the September 11th terrorist attacks, the U.S. government has issued public warnings that indicate that energy assets might be specific targets of terrorist organizations. The continued threat of terrorism and the impact of military and other actions will likely lead to increased volatility in

Due to our lack of asset and geographic diversification, adverse developments in our operating areas would reduce our ability to make distributions to our unitholders.

       We rely exclusively on sales generated from products processed from the refineries we own. Furthermore, almost all of our assets and operations are located in northwest Louisiana. Due to our lack of diversification in asset type and location, an adverse development in these businesses or areas, including adverse developments due to catastrophic events or weather, decreased supply of crude oil feedstocks and/or decreased demand for refined petroleum products, would have a significantly greater impact on our financial condition and results of operations than if we maintained more diverse assets and in diverse locations. Hurricane Katrina and Hurricane Rita brought unusually severe weather conditions and caused extensive property damage to the U.S. Gulf Coast in Louisiana, Mississippi, Texas and Alabama. Although none of our operations suffered physical damage as a result of the storm, feedstock suppliers and logistics providers have been affected, potentially increasing our operating costs or disrupting our ability to produce and ship certain products to customers.

We depend on key personnel for the success of our business and the loss of those persons could have a material adverse effect on our business.

       We depend on the services of our senior management team and other key personnel. The loss of the services of any member of senior management or key employee could have an adverse effect on our business and reduce our ability to make distributions to our unitholders. We may not be able to locate or employ on acceptable terms qualified replacements for senior management or other key employees if their services were no longer available. Except with respect to Mr. Grube, neither we, our general partner nor any affiliate thereof has entered into an employment agreement with any member of our senior management team or other key personnel.

We depend on unionized labor for the operation of our refineries. Any work stoppages or labor disturbances at these facilities could disrupt our business.

       Substantially all of our operating personnel at our Princeton, Cotton Valley and Shreveport refineries are employed under collective bargaining agreements that expire in 2005, 2007 and 2007, respectively. Please read “Business — Employees.” Any work stoppages or other labor disturbances at these facilities could have an adverse effect on our business and reduce our ability to make distributions to our unitholders. In addition, employees who are not currently represented by labor unions may seek union representation in the future, and any renegotiation of current collective bargaining agreements may result in terms that are less favorable to us.

The operating results for our fuels segment and the asphalt we produce and sell are seasonal and generally lower in the first and fourth quarters of the year.

       Demand for gasoline and asphalt products is generally higher during the summer months than during the winter months due to seasonal increases in highway traffic and road construction work. In addition, our natural gas costs tend to be higher during the winter months. As a result, our operating results for the first and fourth calendar quarters for those businesses are generally lower than those for the second and third calendar quarters of each year.

Risks Inherent in an Investment in Us

The Fehsenfeld and Grube families, The Heritage Group and certain of their affiliates will own a 73.1% limited partner interest in us and will own and control our general partner, which has

       Following the offering, The Heritage Group, the Fehsenfeld and Grube Families and certain of their affiliates will own a 73.1% limited partner interest in us. In addition, The Heritage Group and the Fehsenfeld and Grube Families will own our general partner. Conflicts of interest may arise between our general partner and its affiliates, on the one hand, and us and our unitholders, on the other hand. As a result of these conflicts, the general partner may favor its own interests and the interests of its affiliates over the interests of our unitholders. These conflicts include, among others, the following situations:

       Please read “Conflicts of Interest and Fiduciary Duties.”

The Heritage Group and certain of its affiliates may engage in limited competition with us.

       The Heritage Group and certain of its affiliates may engage in limited competition with us. Pursuant to the omnibus agreement, The Heritage Group and its controlled affiliates will agree not to engage in, whether by acquisition or otherwise, the business of refining or marketing specialty lubricating oils, solvents and wax products as well as gasoline, diesel and jet fuel products (“restricted business”) for so long as it controls us. This restriction does not apply to:

       Although Mr. Grube will be prohibited from competing with us pursuant to the terms of the employment agreement we intend to enter into with him, the owners of our general partner, other than The Heritage Group, will not be prohibited from competing with us. For a description of the non-competition provisions of the omnibus agreement, please read “Certain Relationships and Related Party Transactions — Omnibus Agreement.”

Our partnership agreement limits our general partner’s fiduciary duties to our unitholders and restricts the remedies available to unitholders for actions taken by our general partner that might otherwise constitute breaches of fiduciary duty.

       Our partnership agreement contains provisions that reduce the standards to which our general partner would otherwise be held by state fiduciary duty law. For example, our partnership agreement:

       In order to become a limited partner of our partnership, a common unitholder is required to agree to be bound by the provisions in the partnership agreement, including the provisions discussed above. Please read “Conflicts of Interest and Fiduciary Duties — Fiduciary Duties.”

Unitholders have limited voting rights and are not entitled to elect our general partner or its directors.

       Unlike the holders of common stock in a corporation, unitholders have only limited voting rights on matters affecting our business and, therefore, limited ability to influence management’s decisions regarding our business. Unitholders did not elect our general partner or its board of directors, and will have no right to elect our general partner or its board of directors on an annual or other continuing basis. The board of directors of our general partner is chosen by the members of our general partner. Furthermore, if the unitholders were dissatisfied with the performance of our general partner, they will have little ability to remove our general partner. As a result of these limitations, the price at which the common units will trade could be diminished because of the absence or reduction of a takeover premium in the trading price.

Even if unitholders are dissatisfied, they cannot remove our general partner without its consent.

       The unitholders will be unable initially to remove the general partner without its consent because the general partner and its affiliates will own sufficient units upon completion of the offering to be able to prevent its removal. The vote of the holders of at least 66 ² / 3 % of all outstanding units voting together as a single class is required to remove the general partner. Following the closing of this offering, the owners of our general partner will own 74.6% of our common and subordinated units. Also, if our general partner is removed without cause during the subordination period and units held by our general partner and its affiliates are not voted in favor of that removal, all remaining subordinated units will automatically convert into common units and any existing arrearages on the common units will be extinguished. A removal of the general partner under these circumstances would adversely affect the common units by prematurely eliminating their distribution and liquidation preference over the subordinated units, which would otherwise have continued until we had met certain distribution and performance tests.

       Cause is narrowly defined in our partnership agreement to mean that a court of competent jurisdiction has entered a final, non-appealable judgment finding our general partner liable for actual fraud or willful misconduct in its capacity as our general partner. Cause does not include most cases of charges of poor management of the business, so the removal of our general partner during the

Our partnership agreement restricts the voting rights of those unitholders owning 20% or more of our common units.

       Unitholders’ voting rights are further restricted by the partnership agreement provision providing that any units held by a person that owns 20% or more of any class of units then outstanding, other than our general partner, its affiliates, their transferees, and persons who acquired such units with the prior approval of the board of directors of our general partner, cannot vote on any matter. Our partnership agreement also contains provisions limiting the ability of unitholders to call meetings or to acquire information about our operations, as well as other provisions limiting the unitholders’ ability to influence the manner or direction of management.

Control of our general partner may be transferred to a third party without unitholder consent.

       Our general partner may transfer its general partner interest to a third party in a merger or in a sale of all or substantially all of its assets without the consent of the unitholders. Furthermore, our partnership agreement does not restrict the ability of the members of our general partner from transferring their respective membership interests in our general partner to a third party. The new members of our general partner would then be in a position to replace the board of directors and officers of our general partner with their own choices and thereby control the decisions taken by the board of directors.

You will experience immediate and substantial dilution of $15.41 in net tangible book value per common unit.

       The assumed initial public offering price of $22.00 per unit exceeds our pro forma net tangible book value of $6.59 per unit. Based on an assumed initial public offering price of $22.00 per unit, you will incur immediate and substantial dilution of $15.41 per common unit. This dilution results primarily because the assets contributed by our general partner and its affiliates are recorded at their historical cost, and not their fair value, in accordance with GAAP. Please read “Dilution.”

We do not have our own officers and employees and rely solely on the officers and employees of our general partner and its affiliates to manage our business and affairs.

       We do not have our own officers and employees and rely solely on the officers and employees of our general partner and its affiliates to manage our business and affairs. We can provide no assurance that our general partner will continue to provide us the officers and employees that are necessary for the conduct of our business nor that such provision will be on terms that are acceptable to us. If our general partner fails to provide us with adequate personnel, our operations could be adversely impacted.

We may issue additional common units without your approval, which would dilute your existing ownership interests.

       During the subordination period, our general partner, without the approval of our unitholders, may cause us to issue up to 6,533,000 additional common units. Our general partner may also cause us to issue an unlimited number of additional common units or other equity securities of equal rank with the common units, without unitholder approval, in a number of circumstances such as:

       In addition, our partnership agreement does not prohibit the issuance by our subsidiaries of equity securities, which may effectively rank senior to the common units.

       The issuance of additional common units or other equity securities of equal or senior rank to the common units will have the following effects:

       After the end of the subordination period, we may issue an unlimited number of limited partner interests of any type without the approval of our unitholders. Our partnership agreement does not give our unitholders the right to approve our issuance of equity securities ranking junior to the common units at any time.

Our general partner’s determination of the level of cash reserves may reduce the amount of available cash for distribution to you.

       Our partnership agreement requires our general partner to deduct from operating surplus cash reserves that it establishes are necessary to fund our future operating expenditures. In addition, our partnership agreement also permits our general partner to reduce available cash by establishing cash reserves for the proper conduct of our business, to comply with applicable law or agreements to which we are a party, or to provide funds for future distributions to partners. These reserves will affect the amount of cash available for distribution to you.

Cost reimbursements due to our general partner and its affiliates will reduce cash available for distribution to you.

       Prior to making any distribution on the common units, we will reimburse our general partner and its affiliates for all expenses they incur on our behalf. Any such reimbursement will be determined by our general partner. These expenses will include all costs incurred by our general partner and its affiliates in managing and operating us. Please read “Certain Relationships and Related Party Transactions” and “Conflicts of Interests and Fiduciary Duties — Conflicts of Interest.” The reimbursement of expenses and payment of fees, if any, to our general partner could adversely affect our ability to pay cash distributions to you.

       If at any time our general partner and its affiliates own more than 80% of the issued and outstanding common units, our general partner will have the right, but not the obligation, which right it may assign to any of its affiliates or to us, to acquire all, but not less than all, of the common units held by unaffiliated persons at a price not less than their then-current market price. As a result, you may be required to sell your common units to our general partner, its affiliates or us at an undesirable time or price and may not receive any return on your investment. You may also incur a tax liability upon a sale of your common units. At the completion of this offering, our general partner and its affiliates will own approximately 47.1% of the common units. At the end of the subordination period, assuming no additional issuances of common units, our general partner and its affiliates will own approximately 74.6% of the common units. For additional information about this right, please read “The Partnership Agreement — Limited Call Right.”

Your liability may not be limited if a court finds that unitholder action constitutes control of our business.

       A general partner of a partnership generally has unlimited liability for the obligations of the partnership, except for those contractual obligations of the partnership that are expressly made without recourse to the general partner. Our partnership is organized under Delaware law and we conduct business in a number of other states. The limitations on the liability of holders of limited partner interests for the obligations of a limited partnership have not been clearly established in some of the other states in which we do business. You could be liable for any and all of our obligations as if you were a general partner if:

       For a discussion of the implications of the limitations of liability on a unitholder, please read “The Partnership Agreement — Limited Liability.”

Unitholders may have liability to repay distributions that were wrongfully distributed to them.

       Under certain circumstances, unitholders may have to repay amounts wrongfully returned or distributed to them. Under Section 17-607 of the Delaware Revised Uniform Limited Partnership Act, which we call the Delaware Act, we may not make a distribution to you if the distribution would cause our liabilities to exceed the fair value of our assets. Delaware law provides that for a period of three years from the date of the impermissible distribution, limited partners who received the distribution and who knew at the time of the distribution that it violated Delaware law will be liable to the limited partnership for the distribution amount. Purchasers of units who become limited partners are liable for the obligations of the transferring limited partner to make contributions to the partnership that are known to the purchaser of the units at the time it became a limited partner and for unknown obligations if the liabilities could be determined from the partnership agreement. Liabilities to partners on account of their partnership interest and liabilities that are non-recourse to the partnership are not counted for purposes of determining whether a distribution is permitted.

       Prior to the offering, there has been no public market for the common units. After the offering, there will be only 6,400,000 publicly traded common units, assuming no exercise of the underwriters’ over-allotment option. We do not know the extent to which investor interest will lead to the development of a trading market or how liquid that market might be. You may not be able to resell your common units at or above the initial public offering price. Additionally, the lack of liquidity may result in wide bid-ask spreads, contribute to significant fluctuations in the market price of the common units and limit the number of investors who are able to buy the common units.

       The initial public offering price for the common units will be determined by negotiations between us and the representatives of the underwriters and may not be indicative of the market price of the common units that will prevail in the trading market. The market price of our common units may decline below the initial public offering price. The market price of our common units may also be influenced by many factors, some of which are beyond our control, including:

We will incur increased costs as a result of being a public company.

       We have no history operating as a public company. As a public company, we will incur significant legal, accounting and other expenses that we did not incur as a private company. In addition, the Sarbanes-Oxley Act of 2002, as well as rules subsequently implemented by the SEC and NASDAQ, have required changes in corporate governance practices of public companies. We expect these rules and regulations to increase our legal and financial compliance costs and to make activities more time-consuming and costly. For example, as a result of becoming a public company, we are required to have three independent directors, create additional board committees and adopt policies regarding internal controls and disclosure controls and procedures, including the preparation of reports on internal controls over financial reporting. In addition, we will incur additional costs associated with our public company reporting requirements. We also expect these new rules and regulations to make it more difficult and more expensive for our general partner to obtain director and officer liability insurance and it may be required to accept reduced policy limits and coverage or incur substantially higher costs to obtain the same or similar coverage. As a result, it may be more difficult for our general partner to attract and retain qualified persons to serve on its board of directors or as executive officers. We have included $4.5 million of estimated incremental costs per year associated with being a public company; however, our actual incremental costs of being a public company may be higher than we currently estimate.

Tax Risks to Common Unitholders

       In addition to reading the following risk factors, you should read “Material Tax Consequences” for a more complete discussion of the expected material federal income tax consequences of owning and disposing of common units.

Our tax treatment depends on our status as a partnership for federal income tax purposes, as well as our not being subject to entity-level taxation by individual states. If the Internal Revenue Service, or IRS, treats us as a corporation or we become subject to entity-level taxation for state tax purposes, it would substantially reduce the amount of cash available for distribution to you.

       The anticipated after-tax economic benefit of an investment in the common units depends largely on our being treated as a partnership for federal income tax purposes. We have not requested, and do not plan to request, a ruling from the IRS on this or any other tax matter affecting us.

       If we were treated as a corporation for federal income tax purposes, we would pay federal income tax on our income at the corporate tax rate, which is currently a maximum of 35% and would likely pay state income tax at varying rates. Distributions to you would generally be taxed again as corporate distributions, and no income, gains, losses or deductions would flow through to you. Because a tax would be imposed upon us as a corporation, our cash available for distribution to you would be substantially reduced. Therefore, our treatment as a corporation would result in a material reduction in the anticipated cash flow and after-tax return to the unitholders, likely causing a substantial reduction in the value of our common units.

       Current law may change so as to cause us to be treated as a corporation for federal income tax purposes or otherwise subject us to entity-level taxation. In addition, because of widespread state budget deficits, several states are evaluating ways to subject partnerships to entity-level taxation through the imposition of state income, franchise and other forms of taxation. If any of these states were to impose a tax on us, the cash available for distribution to you would be reduced. The partnership agreement provides that if a law is enacted or existing law is modified or interpreted in a manner that subjects us to taxation as a corporation or otherwise subjects us to entity-level taxation for federal, state or local income tax purposes, the minimum quarterly distribution amount and the target distribution levels will be adjusted to reflect the impact of that law on us.

A successful IRS contest of the federal income tax positions we take may adversely affect the market for our common units, and the cost of any IRS contest will reduce our cash available for distribution to our unitholders.

       We have not requested a ruling from the IRS with respect to our treatment as a partnership for federal income tax purposes or any other matter affecting us. The IRS may adopt positions that differ from the conclusions of our counsel expressed in this prospectus or from the positions we take. It may be necessary to resort to administrative or court proceedings to sustain some or all of our counsel’s conclusions or the positions we take. A court may not agree with all of our counsel’s conclusions or positions we take. Any contest with the IRS may materially and adversely impact the market for our common units and the price at which they trade. In addition, our costs of any contest with the IRS will be borne indirectly by our unitholders and our general partner because the costs will reduce our cash available for distribution.

You may be required to pay taxes on income from us even if you do not receive any cash distributions from us.

       Because our unitholders will be treated as partners to whom we will allocate taxable income which could be different in amount than the cash we distribute, you will be required to pay any federal income taxes and, in some cases, state and local income taxes on your share of our taxable

Tax gain or loss on disposition of common units could be more or less than expected.

       If you sell your common units, you will recognize a gain or loss equal to the difference between the amount realized and your tax basis in those common units. Prior distributions to you in excess of the total net taxable income you were allocated for a common unit, which decreased your tax basis in that common unit, will, in effect, become taxable income to you if the common unit is sold at a price greater than your tax basis in that common unit, even if the price is less than your original cost. A substantial portion of the amount realized, whether or not representing gain, may be ordinary income. In addition, if you sell your units, you may incur a tax liability in excess of the amount of cash you receive from the sale.

Tax-exempt entities and foreign persons face unique tax issues from owning common units that may result in adverse tax consequences to them.

       Investment in common units by tax-exempt entities, such as individual retirement accounts (“IRAs”), other retirement plans, and non-U.S. persons raises issues unique to them. For example, virtually all of our income allocated to organizations that are exempt from federal income tax, including individual retirement accounts and other retirement plans, will be unrelated business taxable income and will be taxable to them. Distributions to non-U.S. persons will be reduced by withholding taxes at the highest applicable effective tax rate, and non-U.S. persons will be required to file United States federal tax returns and pay tax on their share of our taxable income. If you are a tax-exempt entity you should consult your tax advisor before investing in our common units.

We will treat each purchaser of our common units as having the same tax benefits without regard to the actual common units purchased. The IRS may challenge this treatment, which could adversely affect the value of the common units.

       Because we cannot match transferors and transferees of common units and because of other reasons, we will take depreciation and amortization positions that may not conform to all aspects of existing Treasury regulations. A successful IRS challenge to those positions could adversely affect the amount of tax benefits available to you. It also could affect the timing of these tax benefits or the amount of gain from the sale of common units and could have a negative impact on the value of our common units or result in audit adjustments to your tax returns. For a further discussion of the effect of the depreciation and amortization positions we will adopt, please read “Material Tax Consequences — Uniformity of Units.”

Unitholders may be subject to state and local taxes and return filing requirements.

       In addition to federal income taxes, you will likely be subject to other taxes, including foreign, state and local taxes, unincorporated business taxes and estate, inheritance or intangible taxes that are imposed by the various jurisdictions in which we do business or own property, even if you do not live in any of those jurisdictions. You will likely be required to file foreign, state and local income tax returns and pay state and local income taxes in some or all of these jurisdictions. Further, you may be subject to penalties for failure to comply with those requirements. We will initially own assets and do business in Indiana, Illinois, Louisiana, New Jersey, Pennsylvania, Texas and Utah. Each of these states, other than Texas, currently imposes a personal income tax as well as an income tax on corporations and other entities. As we make acquisitions or expand our business, we may own assets or do business in additional states that impose a personal income tax. It is your responsibility to file all United States federal, foreign, state and local tax returns. Our counsel has not rendered an opinion on the state or local tax consequences of an investment in the common units.

We have a subsidiary that will be treated as a corporation for federal income tax purposes and subject to corporate-level income taxes.

       We will conduct all or a portion of our operations in which we market finished petroleum products to certain end-users through a subsidiary that is organized as a corporation. We may elect to conduct additional operations through this corporate subsidiary in the future. This corporate subsidiary will be subject to corporate-level tax, which will reduce the cash available for distribution to us and, in turn, to you. If the IRS were to successfully assert that this corporation has more tax liability than we anticipate or legislation was enacted that increased the corporate tax rate, our cash available for distribution to you would be further reduced.

The sale or exchange of 50% or more of our capital and profits interests during any twelve-month period will result in the termination of our partnership for federal income tax purposes.

       We will be considered to have terminated for federal income tax purposes if there is a sale or exchange of 50% or more of the total interests in our capital and profits within a twelve-month period. Our termination would, among other things, result in the closing of our taxable year for all unitholders and could result in a deferral of depreciation deductions allowable in computing our taxable income. Please read “Material Tax Consequences — Disposition of Common Units — Constructive Termination” for a discussion of the consequences of our termination for federal income tax purposes.

OUR CASH DISTRIBUTION POLICY AND RESTRICTIONS ON DISTRIBUTIONS

       You should read the following discussion of our cash distribution policy in conjunction with the specific assumptions upon which our cash distribution policy is based. Please read “— Assumptions and Considerations” below. For additional information regarding our historical and pro forma operating results, you should refer to our historical financial statements for the years ended December 31, 2002, 2003 and 2004, our unaudited historical financial statements for the six months ended June 30, 2004 and 2005, and our unaudited pro forma condensed consolidated financial statements for the year ended December 31, 2004 and six months ended June 30, 2005 included elsewhere in this prospectus.

General

       Rationale for Our Cash Distribution Policy. Our cash distribution policy reflects a basic judgment that our unitholders will be better served by our distributing our available cash rather than retaining it. Because we are not subject to a partnership-level federal income tax, we have more cash to distribute to you than would be the case were we subject to partnership level federal income tax. Our cash distribution policy is consistent with the terms of our partnership agreement, which requires that we distribute available cash to our unitholders quarterly. Our determination of available cash takes into account the need to maintain certain cash reserves to preserve our distribution levels across seasonal and cyclical fluctuations in our business. Please read “How We Make Cash Distributions.”

       Limitations on Cash Distributions and Our Ability to Change Our Cash Distribution Policy. There is no guarantee that unitholders will receive quarterly distributions from us. Our distribution policy is subject to certain restrictions and may be changed at any time, including:

       Our Ability to Grow is Dependent on Our Ability to Access External Expansion Capital. We will distribute our available cash from operations to our unitholders. As a result, we expect that we will rely primarily upon external financing sources, including commercial bank borrowings and the issuance of debt and equity securities, to fund our acquisitions and major expansion capital expenditures. As a result, to the extent we are unable to finance growth externally, our cash distribution policy will significantly impair our ability to grow. In addition, to the extent we issue additional units in connection with any acquisitions or expansion capital expenditures, the payments of distributions on those additional units may increase the risk that we will be unable to maintain or increase our per unit distribution level, which in turn may reduce the available cash that we have to distribute on each unit. We are able to issue additional units without the approval of our unitholders in a number of circumstances. Please read “The Partnership Agreement — Issuance of Additional Securities.” The incurrence of additional commercial borrowings or other debt to finance our growth strategy would result in increased interest expense, which in turn may reduce the available cash that we have to distribute to our unitholders.

Our Initial Distribution Rate

       Upon completion of this offering, the board of directors of our general partner will adopt a policy pursuant to which we will declare an initial quarterly distribution of $0.45 per unit per complete quarter, or $1.80 per unit per year, to be paid no later than 45 days after the end of the fiscal quarter through the quarter ending December 31, 2006. This equates to an aggregate cash distribution of $11.6 million per quarter or $46.2 million per year, in each case based on the number of common units, subordinated units and general partner units outstanding immediately after completion of this offering. Our ability to make cash distributions at the initial distribution rate pursuant to this policy will be subject to the factors described above under the caption “— Limitations on Cash Distributions and Our Ability to Change Our Cash Distribution Policy.”

       The table below sets forth the assumed number of outstanding common units, subordinated units and general partner units upon the closing of this offering and the aggregate distribution amounts payable on such units during the year following the closing of this offering at our initial distribution rate of $0.45 per common unit per quarter ($1.80 per common unit on an annualized basis).

       We do not have a legal obligation to pay distributions at our initial distribution rate or at any other rate except as provided in our partnership agreement. Our partnership agreement requires that

       If distributions on our common units are not paid with respect to any fiscal quarter at the anticipated initial distribution rate, our unitholders will not be entitled to receive such payments in the future; provided, however, the holders of common units will be entitled to a preference over holders of subordinated units with respect to cash distributions at our initial distribution rate, which preference will allow holders of common units to receive deficiencies in payments of cash distributions at our initial distribution rate in subsequent quarters to the extent we have available cash to pay these deficiencies related to prior quarters, before any cash distribution is made to holders of subordinated units. Please read “How We Make Distributions — Subordination Period.”

       As of the date of this offering, our general partner will be entitled to 2% of all distributions that we make prior to our liquidation. The general partner’s initial 2% interest in these distributions may be reduced if we issue additional units in the future and our general partner does not elect to contribute a proportionate amount of capital to us to maintain its initial 2% general partner interest.

       We will pay our distributions on or about the 15th of each February, May, August and November to holders of record on or about the 1st of each of such month. If the distribution date does not fall on a business day, we will make the distribution on the business day immediately preceding the indicated distribution date. We will adjust the quarterly distribution for the period from the closing of this offering through March 31, 2006 based on the actual length of the period.

       In the sections that follow, we present in detail the basis for our belief that we will have sufficient available cash from operating surplus to pay the minimum quarterly distribution on all of our outstanding common and subordinated units for each quarter through December 31, 2006. In those sections, we present two tables, consisting of:

Pro Forma Cash Available for Distribution for Year Ended December 31, 2004 and Twelve Months Ended June 30, 2005

       If we had completed the transactions contemplated in this prospectus on January 1, 2004, pro forma available cash generated during the year ended December 31, 2004 would have been approximately $16.7 million. This amount would have been sufficient to pay approximately 75.2% of the minimum quarterly distribution on the common units and none of the minimum quarterly distribution on the subordinated units in 2004. If we had completed the transactions contemplated in this prospectus on July 1, 2004, our pro forma available cash for the twelve months ended June 30, 2005 would have been approximately $25.8 million. This amount would have been sufficient to pay the full minimum quarterly distribution on the common units and 14.7% of the minimum quarterly distribution on the subordinated units for the twelve-month period ended June 30, 2005.

       The pro forma financial statements, upon which pro forma cash available for distribution is based, do not purport to present our results of operations had the transactions contemplated in this prospectus actually been completed as of the dates indicated. Furthermore, cash available for distribution is a cash accounting concept, while our pro forma financial statements have been prepared on an accrual basis. We derived the amounts of pro forma cash available for distribution shown above in the manner described in the table below. As a result, the amount of pro forma cash available for distribution should only be viewed as a general indication of the amount of cash available for distribution that we might have generated had we been formed in earlier periods.

Calumet Specialty Products Partners, L.P.

Unaudited Pro Forma Cash Available for Distribution