API SL

API Service Category SL was first introduced in 2001 for use in gasoline engines and is not suitable for use in engines introduced after 2004. API continues to license engine oils against API SL and it is considered to be a current specification.Oils that satisfy API...

API SM

API Service Category SM was first introduced in 2004 for use in gasoline engines and is not suitable for use in engines introduced after 2010. API continues to license engine oils against API SM and it is considered to be a current specification.Oils that satisfy API...

API SN

API Service Category SN was first introduced in 2010 for use in gasoline engines. Oils meeting API SN are designed to provide improved performance across a wide range of areas including high temperature deposit protection for pistons and improved protection against...

API SN PLUS

API Service Category SN PLUS was introduced in May 2018 as a supplement to API SN and ILSAC GF-5 to ensure that engine oils properly protect against low speed pre-ignition (LSPI), a severe engine performance issue that affects gasoline direct injected (GDI) and...