API CF-4

API CF-4 was introduced in 1990 for high-speed, four-stroke, naturally aspirated and turbocharged diesel engines.Oils approved for API CF-4 were designed to be used in place of API CD and CE oils, providing improved control of oil consumption and piston deposits.API...

API CH-4

API CH-4 was introduced in 1998 for high-speed, four-stroke diesel engines without advanced after-treatment emissions systems, designed to meet 1998 exhaust emission standards.API CH-4 oils are specifically designed for use with diesel fuels with a sulfur content of...

API CJ-4

API Service Category CJ-4 is the primary performance category for high-speed, four-stroke diesel engines designed to meet 2010 model year on-highway and Tier 4 non-road exhaust emission standards, as well as for previous model year diesel engines.These oils are...

API CI-4

API Service Category CI-4 was introduced in 2002 for high-speed, four-stroke diesel engines designed to meet 2004 exhaust emission standards implemented in 2002.API CI-4 oils are formulated to sustain engine durability where exhaust gas recirculation (EGR) and other...

API CK-4

API CK-4 describes oils for use in high-speed four-stroke cycle diesel engines designed to meet 2017 model year on-highway and Tier 4 non-road exhaust emission standards, as well as for previous model year diesel engines.These oils are formulated for use in all...

API FA-4

API FA-4 describes certain xW-30 oils specifically formulated for use in select high-speed four-stroke cycle diesel engines designed to meet 2017 model year on-highway greenhouse gas (GHG) emission standards.These oils are formulated for use in on-highway applications...