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API SN | ILSAC GF-5 Engine Oils


API SN and ILSAC GF-5 are the previous engine oil specifications to the newer SP / GF-6.

API (American Petroleum Institute) and ILSAC (International Lubricant Specification Advisory Committee) dictate minimum oil performance standards for use in vehicles that lubricant manufactures should follow.

These standards are backward compatible with the previous generation standards. For example,  API SN is backward compatible with API SL, SH, SJ... oils.


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