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 The latest engine oil service category includes the performance properties of each earlier category. if an automotive owner's manual calls for an
The latest engine oil service category includes the performance properties of each earlier category. if an automotive owner's manual calls for an API SJ OR SL oil, an API SM oil will provide full protection.
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Gasoline (Petrol) Engines
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Category
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Status
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Service
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SM
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Current
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For all automotive engines currently in use. Introduced in 2004, SM oils are designed to provide improved oxidation resistance, improved deposit protection, better wear protection, and better low-temperature performance over the life of the oil. Some SM oils may also meet the latest ILSAC specification and/or qualify as Energy Conserving.
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SL
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Current
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For 2004 and older automotive engines.
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SJ
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Current
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For 2001 and older automotive engines.
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SH
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Obsolete
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For 1996 and older engines.
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SG
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Obsolete
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For 1993 and older engines.
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SF
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Obsolete
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For 1988 and older engines.
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SE
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Obsolete
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CAUTION: Not suitable for use in gasoline-powered automotive engines built after 1979.
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SD
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Obsolete
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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.
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SC
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Obsolete
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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.
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SB
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Obsolete
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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.
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SA
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Obsolete
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CAUTION: Contains no additives. Not suitable for use in gasoline-powered automotive engines built after 1930. Use in more modern engines may cause unsatisfactory performance or equipment harm.
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Use the recommended API category. "S" for petrol engines and "C" for diesel engines. the latest category usually - but not always