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Diesel Engines

Diesel Engines
Category Status Service
CI-4 Current Introduced September 5, 2002. For high-speed, four-stroke engines designed to meet 2004 exhaust emission standards implemented in 2002. CI-4 oils are formulated to sustain engine durability where exhaust gas recirculation (EGR) is used and are intended for use with diesel fuels ranging in sulfur content up to 0.5% weight. Can be used in place of CD, CE, CF-4, CG-4, and CH-4 oils.
CH-4 Current
Introduced in 1998. For high-speed, four-stroke engines designed to meet 1998 exhaust emission standards. CH-4 oils are specifically compounded for use with diesel fuels ranging in sulfur content up to 0.5% weight. Can be used in place of CD, CE, CF-4, and CG-4 oils.
CG-4 Current Introduced in 1995. For severe duty, high speed, four-stroke engines using fuel with less than 0.5% weight sulfur. CG-4 oils are required for engines meeting 1994 emission standards. Can be used in place of CD, CE, and CF-4 oils.
CF-4 Current
Introduced in 1990. For high-speed, four-stroke, naturally aspirated and turbocharged engines. Can be used in place of CD and CE oils.
CF-2 Current Introduced in 1994. For severe duty, two-stroke cycle engines. Can be used in place of CD-II oils.
CF Current Introduced in 1994. For off-road, indirect injected and other diesel engines including those using fuel with over 0.5% weight sulfur. Can be used in place of CD oils.
CE Obsolete
Introduced in 1987. For high-speed, four-stroke, naturally aspirated and turbocharged engines. Can be used in place of CC and CD oils.
CD-IIObsoleteIntroduced in 1987. For two-stroke-cycle engines.
CD ObsoleteIntroduced in 1955. For certain naturally aspirated and turbocharged engines.
CC ObsoleteFor engines introduced in 1961.
CB ObsoleteFor moderate duty engines from 1949 to 1960.
CA ObsoleteFor light duty engines (1940's and 1950's).
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