API has adopted two new engine oil performance standards for vehicles with gasoline engines: ILSAC GF-5 and API SN. ILSAC GF-5 represents the latest performance standard set by the International Lubricant Standardization and Approval Committee (ILSAC), a joint effort of U.S. and Japanese automobile manufacturers. Most automobile manufacturers are expected to recommend oils that meet ILSAC GF-5. API SN is the most recent service category issued by API’s Lubricants Group. Oils meeting API SN and the new “Resource Conserving” designation meet all ILSAC GF-5 performance requirements. Vehicle owners and operators should follow their vehicle manufacturer’s recommendations on engine oil viscosity and performance standard.
Click here to download information on the two new engine oil standards.