General Motors Position on Use of Re-refined Engine Oils

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. In both cases it is the oil marketer.s responsibility to ensure that the product satisfies the performance requirements specified above both during initial product approval, and during the time that the product is being manufactured for sale. It is particularly important that steps be taken by marketers of engine oils made from re-refined base oils to ensure that variations in re-refining processes or raw materials do not adversely affect oil performance.

General Motors encourages the use of properly qualified re-refined products which consistently satisfy recommended performance requirements as a means of conserving vital petroleum resources. Use of re-refined products that have not been properly qualified or do not consistently meet performance requirements, however could result in engine damage, and could harm the reputation of all re-refined products. Engine damage caused by the use of an engine oil which does not meet the recommended performance specifications may not be covered by the General Motors new vehicle warranty.

Look for this CERTIFICATION MARK