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Gasoline Engines "S" Status Service Gasoline Engines API SP Introduced in May 2020 Designed to provide protection against low-speed pre-ignition (LSPI), timing chain wear protection, improved high temperature deposit protection for pistons and turbochargers, and...
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Spec Status Description GL-1 Active The designation API GL-1 denotes lubricants intended for manual transmissions operating under such mild conditions that straight petroleum or refined petroleum oil may be used satisfactorily. Oxidation and rust inhibitors,...
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Spec Status Description TA Obsolete Proposed classification for two-stroke engine oils required for extremely-small engines, typically less than 50 cc. Engine Tests for this classification were under preparation when the Coordinating European Council (CEC) withdrew...