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Letters from Auto and Equipment Manufacturers on Use of Re-refined Oil

Re-refined engine oils conserve resources and can save your agency money. Re-refined oil is subject to the same stringent refining, compounding, and performance standards as virgin oil for use in automotive, heavy-duty diesel, and other internal combustion engines. Ford, General Motors, Chrysler, Caterpillar, and Detroit Diesel have issued written statements explaining that the use of re-refined oil will not void warranties. WarrantyThe representations, either expressed or implied, that a certain fact regarding the subject matter of a contract is presently true or will be true. Not to be confused with "guarantee," which means a contract or promise by one person to answer for the performance of another person. requirements are based on performance criteria and not on the origin of the base oil. As long as the purchased oil meets the warranty requirements, the warranty must be honored. Excerpts from these statements are provided. The complete statements can be found on the following web sites:

Statements from Manufactures Supporting the Use of Re-Refined Oil

If these rerefined oils are manufactured correctly, there is then no reason not to use them. We approved the use of rerefined engine oils for use in our engines decades ago. The requirement is, above all, that the rerefining process is perfect and the oils are alloyed correctly just like virgin base oils.
Mercedes-Benz Aktiengesellschaft

Oils that display this registered mark on the front of the container are certified to meet all the requirements of the International Lubricant Standardization and Approval Committee (ILSAC) GF-1 standard for engine oil. This specificationA concise statement of a set of requirements to be satisfied by a product, material, or process; indicating whenever appropriate the procedures to determine whether the requirements are satisfied. As far as practicable, it is desirable that the requirement be expressed numerically in terms of appropriate units together with their limits. does not differentiate between products made from virgin base oils or re-refined base oils. The marketer of the product must make sure that not only the initial product, but every batch of oil, meets the requirements of this specification. Oils made from re-refined base oils can meet these requirements; however, not all of them do. By careful control of re-refining and blending processes, some marketers produce good quality oils from re-refined base oils. These are acceptable for use under the Chrysler New Vehicle Limited Warranty. Low or inconsistent quality oils may cause engine damage not covered by warranty.
Chrysler Corporation

Ford recommends using engine oil meeting Ford Specification ESE-M2C153-E and licensed as certified for gasoline engines by the American Petroleum Institute (API Certification). Both virgin and re-refined engine oils are capable of meeting these requirements by qualifying against a series of rigorous tests designed to ensure their suitability for modem gasoline engines. While these tests confirm a specific sample of the oil qualifies with acceptable performance, it is the responsibility of the oil marketers to ensure that their products meet the requirements consistently and continuously.
Ford Motor Company

General Motors recommends for use in its vehicles engine oils which meet the performance requirements specified in the latest International Lubricant Standardization and Approval Committee (ILSAC) Minimum Performance Standard (currently ILSAC GF-1), and which are certified by the American Petroleum Institute for use in gasoline engines. Such oils may be identified in the marketplace by looking for the Certification Mark Shown below on the front of the engine oil container. Engine oils meeting these requirements can be made with either virgin or re-refined base oils.
General Motors

Re-refined base stock oils are acceptable for use in Caterpillar engines and in Caterpillar machines if these oils meet the performance requirements that are specified by Caterpillar for a particular compartment. Each compartment has requirements for lubrication and requirements for lubrication specifications in order to ensure proper lubrication and life of the system. Re-refined base oils can be used exclusively in finished oil or in a combination with new base oils. The U.S. military specifications and the specifications of other heavy equipment manufacturers also allow the use of re-refined base oils that meet the same criteria.
Caterpillar

With over one billion gallons of waste oil generated annually in the U.S. alone, disposal of waste oil has become a serious environmental concern. Re-refining waste oils provides an environmentally viable way of handling this material. Several states have established collection and recycling programs. A few states have also designated used oil as a hazardous waste requiring special handling and disposal. Detroit Diesel favors the recycling of waste oil and permits the use of re-refined oils in all engine product lines, provided the rerefined oil meets the SAE Viscosity and API specifications previously mentioned.
Detroit Diesel

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Using the Symbols

  • Less Hazardous

    Products containing hazardous chemicals can pose health risks to employees and the public, as well as threaten the environment. In addition, hazardous products often require special and costly waste disposal methods. Buy products that are labeled with none of the following signal words or those with the lowest level of hazard possible (but that still get the job done).
    • Caution: mild to moderate hazard
    • Warning: moderate hazard
    • Danger: corrosive, extremely flammable, or highly toxic
    • Poison: highly toxic

    If less-hazardous alternatives are not readily available, use the least amount of a hazardous product needed to accomplish a task. Use up all of the product before throwing the container or packaging away.

    Less Hazardous
  • Conserves Energy

    Reducing energy use is important because most energy production contributes to problems such as carbon dioxide emissions (tied to global warming), mercury releases, acid rain, volatile organic compounds, and nuclear waste. The U.S. Environmental Protection Agency and U.S. Department of Energy developed the Energy Star label to help purchasers identify energy-efficient products. These products reduce utility bills and help the environment.
    Conserves Energy
  • Recycled Content

    Recycled-content products save energy and resources, while also keeping waste out of landfills and incinerators. Recycled-content products can be made with post-consumer content, pre-consumer content, or a mix of both. Products made with post-consumer recycled content support our recycling programs at home and at work. If people do not buy products with post-consumer recycled content, manufacturers will no longer want the paper, cans, glass, or plastic we separate from trash. Pre-consumer content comes primarily from manufacturer scrap, and as such does not directly support such recycling efforts.
    Recycled Content
  • Prevents Waste

    Minnesota generates over 5 million tons of municipal solid waste annually, and this amount is increasing every year. Much of this waste comes from disposable and over-packaged products. Preventing waste can conserve natural resources and avoid the need to build new, expensive waste disposal facilities. You prevent waste when:
    • Reducing the amount of material you buy to accomplish any task;
    • Reusing a product in its original form; or
    • Using repairable, refillable, or durable products.
    Prevents Waste
  • Low Volatile Organic Compounds (VOCs)

    VOCs evaporate ("volatilize") easily at room temperature and often have a sharp smell. They are contained in many products, such as office equipment, adhesives, carpeting, upholstery, manufactured wood products, paints, solvents, pesticides, and cleaning products. Some VOCs can cause cancer in certain situations, especially when they are concentrated indoors. When VOCs hit sunlight, they create ozone, an air pollutant harmful to both people and plants. Many low-VOC versions of products reduce risks to human health and the environment.
    Low Volatile Organic Compounds (VOCs)
  • Conserves Water

    Less than 1% of the Earth's water is available for human consumption. There is no "new" water on Earth. Dry spells have reminded us that our water supply can be threatened - even in the Land of 10,000 Lakes - resulting in watering bans in some municipalities. Choosing products and services that conserve water, such as automatic flushers and low-flow faucets and toilets, can conserve this vital resource while reducing water and sewer bills.
    Conserves Water
  • End of Life Management

    What happens to a product after we use it? Some materials cannot go in the trash because they are hazardous in some way and therefore need separate - and sometimes expensive - special management. Some products are more easily recycled than others that do the same job. Making wiser buying choices can prevent a disposal concern at the end of a product's useful life, keep hazardous materials out of the environment, and expand options for recycling and reuse.
    End of Life Management
Use these symbols throughout this Guide to reduce your impact.
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Environmentally Preferable Purchasing Guide published by the Solid Waste Management Coordinating Board, 4/00. The SWMCB includes members from the Minnesota metropolitan counties of Anoka, Carver, Dakota, Hennepin, Ramsey, and Washington, with ex-officio members from the Minnesota Pollution Control Agency.

Last Revised April 12, 2008 - 11:08pm

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