International Lubricants Standardization and Approval Committee. A collaboration between the American Automobile Manufacturers Association (AAMA), Chrysler, Ford, GM, and the Japanese Automotive Standards Organization. ILSAC GF- engine oil specifications target fuel economy, emission system protection, and enhanced engine oil robustness. GF-4 was first introduced in 2004 for use in gasoline engines in passenger cars.
American Petroleum Institute. The primary oil and natural gas trade association in the United States. API operates a voluntary licensing and certification program that allows engine oil marketers to use the API Engine Oil Quality Marks if their products meet specific requirements. has discontinued licensing engine oils against ILSAC GF-4 and it became an obsolete specification in September 2011.
API recommends that oils meeting the latest ILSAC standard are used in applications where ILSAC GF-4 is specified. Due to newer ILSAC standards (ILSAC GF-5) being suitable for use in applications specifying ILSAC GF-4 it is possible to find oils available today that claim to meet the requirements of ILSAC GF-4.
Oils meeting ILSAC GF-4 are typically low High Temperature High Shear. A measure of a fluid’s resistance to flow under conditions resembling highly-loaded journal bearings in fired internal combustion engines, typically 1 million s–1 at 150°C. (≤ 3.5cP) SAE 10W-30, 5W-30, 0W-30, 5W-20 or 0W-20 based on API Group II, Group III or Group IV base oils and coupled with API SM and an energy conserving claim.
For more information on ILSAC GF-4, contact your Lubrizol representative.