What does ILSAC engine oil mean?

[ValerieLynn]

ILSAC stands for the International Lubricant Standardization and Approval Committee, which was jointly established by the American Automobile Manufacturers Association and the Japanese Automobile Manufacturers Association. It is an organization that certifies lubricant product specifications, with its certifications issued by the American Petroleum Institute (API). ILSAC has established gasoline engine oil specifications as GF-1, GF-2, GF-3, GF-4, and GF-5. In addition to meeting all the requirements of API SH, SJ, SL, SM, and SN respectively, GF-1, GF-2, GF-3, GF-4, and GF-5 must also comply with the EC energy-saving requirements set by ILSAC. The energy-saving standards are as follows: 1. GF-1 is equivalent to SH plus energy-saving requirements; GF-2 is equivalent to SJ plus energy-saving requirements. 2. GF-3 is equivalent to SL plus energy-saving requirements; GF-4 is equivalent to SM plus energy-saving requirements. 3. GF-5 is equivalent to SN plus energy-saving requirements.