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ILSAC Standard for Passenger Car Engine Oils

The current and previous ILSAC standards and API Service Categories are listed here. Vehicle owners should refer to their owner’s manuals before consulting these charts. Oils may have more than one performance level.

For automotive gasoline engines, the latest ILSAC standard or API Service Category includes the performance properties of each earlier category and can be used to service older engines where earlier category oils were recommended.

ILSAC Standard for Passenger Car Engine Oils
Name Status Service
 
GF-5 Current Designed to provide improved high temperature deposit protection for pistons and turbochargers, more stringent sludge control, improved fuel economy, enhanced emission control system compatibility, seal compatibility, and protection of engines operating on ethanol-containing fuels up to E85.
GF-4 Obsolete Use GF-5 where GF-4 is recommended.
GF-3 Obsolete Use GF-5 where GF-3 is recommended.
GF-2 Obsolete Use GF-5 where GF-2 is recommended.
GF-1 Obsolete Use GF-5 where GF-1 is recommended.