Medway Lubricants - Specialist Oils, Lubricants and Fluids

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The American Petroleum Institute (API) Specifications for automobile engine oils.


GASOLINE ENGINES

CATEGORY STATUS SERVICE
SM CURRENT For all automotive engines currently in use. Introduced in 2004, SM oils are designed to provide improved oxidation resistance, improved deposit protection, betterwear protection, and better low-temperature performance overthe life ofthe oil. Some SM oils may also meetthe latestILSAC specification and/or qualify as Energy Conserving.
SL CURRENT For 2004 and older automotive engines.
SJ CURRENT For 2001 and older automotive engines.
SH OBSOLETE For 1996 and older engines.
SG OBSOLETE For 1993 and older engines.
SF OBSOLETE For 1988 and older engines.
SE OBSOLETE CAUTION:Not suitable for use in gasoline-powered automotive engines built after 1979.
SD OBSOLETE CAUTION:Not suitable for use in gasoline-powered automotive engines built after 1971. Use in more modern engines may cause unsatisfactory performance or equipment harm.
SC OBSOLETE CAUTION:Not suitable for use in gasoline-powered automotive engines built after 1967. Use in more modern engines may cause unsatisfactory performance or equipment harm.
SB OBSOLETE CAUTION:Not suitable for use in gasoline-powered automotive engines built after 1951. Use in more modern engines may cause unsatisfactory performance or equipment harm.
SA OBSOLETE CAUTION: Contains no additives.Not suitable for use in gasoline-powered automotive engines built after1930. Use in more modern engines may cause unsatisfactory performance or equipment harm.

 

DIESEL ENGINES
CATEGORY STATUS SERVICE
CJ-4 CURRENT Introduced in 2006. For high-speed, four-stroke engines designed to meet 2007 model year on-highway exhaust emission standards. CJ-4 oils are compounded for use in all applications with diesel fuels ranging in sulfur content up to 500 ppm (0.05% by weight). However, use of these oils with greater than 15 ppm (0.0015% by weight) sulfur fuel may impact exhaust aftertreatment system durability and/or oil drain interval. CJ-4 oils are effective at sustaining emission control system durability where particulate filters and other advanced aftertreatment systems are used. Optimum protection is provided for control of catalyst poisoning, particulate filter blocking, enginewear, piston deposits, low- and high temperature stability, soot handling properties, oxidative thickening, foaming, and viscosity loss due to shear. API CJ-4 oils exceed the performance criteria of API CI-4with CI-4 PLUS, CI-4, CH-4, CG-4 and CF-4 and can effectively lubricate engines calling for those API Service Categories. When using CJ-4 oil with higher than 15 ppm sulfur fuel, consult the engine manufacturer for service interval.
CI-4 CURRENT Introduced in 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 usewith 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. Some CI-4 oils may also qualify for the CI-4 PLUS designation.
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 OBSOLETE 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-2 OBSOLETE Introduced in 1994. For severe duty, two-stroke-cycle engines. Can be used in place of CD-II oils.
CF OBSOLETE 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 1985. For high-speed, four-stroke, naturally aspirated and turbocharged engines. Can be used in place of CC and CD oils.
CD-II OBSOLETE Introduced in 1985. For two-stroke cycle engines.
CD OBSOLETE Introduced in 1955. For certain naturally aspirated and turbocharged engines
CC OBSOLETE CAUTION: Not suitable for use in diesel-powered engines built after 1990.
CB OBSOLETE CAUTION: Not suitable for use in diesel-powered engines built after 1961.
CA
OBSOLETE CAUTION: Not suitable for use in diesel-powered engines built after 1959.
Last modified on Tuesday, 09 April 2013 14:46

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