Introduced in 2010, SN oils provide improved high-temperature protection against piston deposits and offer enhanced seal compatibility. API SN oils labeled “Resource Conserving” meet ILSAC GF-5 specifications and are characterized by improved fuel economy, turbocharger protection, and emissions system compatibility. They also protect engines using ethanol-containing fuels up to E85.

For vehicle engines from 2010 and earlier.

For vehicle engines from 2004 and earlier.

For vehicle engines from 2001 and earlier.

For vehicle engines from 1996 and earlier.

WARNING: Not suitable for gasoline engines built after 1993. May not provide adequate deposit protection.

WARNING: Not suitable for gasoline engines built after 1988. May not provide adequate deposit protection.

WARNING: Not suitable for gasoline engines built after 1979.

WARNING: Not suitable for gasoline engines built after 1971. Use in modern engines may result in insufficient performance or damage.

WARNING: Not suitable for gasoline engines built after 1967. Use in modern engines may result in insufficient performance or damage.

WARNING: Not suitable for gasoline engines built after 1951. Use in modern engines may result in insufficient performance or damage.

WARNING: Contains no additives. Not suitable for gasoline engines built after 1930. Use in modern engines may result in insufficient performance or damage.

Describes certain XW-30 oils specifically developed for use in selected high-speed four-stroke diesel engines to meet greenhouse gas (GHG) emission limits for model year 2017 and newer. These oils are formulated for highway service using diesel fuel with a sulfur content of up to 15 ppm. Follow the engine manufacturer’s recommendations when using API FA-4 oils. API FA-4 oils are formulated with an HTHS range of 2.9 cP–3.2 cP to support GHG emission reduction. These oils are especially effective in maintaining emissions control systems where particulate filters and other modern aftertreatment technologies are used. API FA-4 oils are designed to provide enhanced protection against oxidation, shear-related viscosity loss, foaming, catalyst poisoning or clogging, particulate filter blockage, engine wear, piston deposits, loss of high- and low-temperature properties, and soot-related viscosity increase. API FA-4 oils are not interchangeable or backward-compatible with API CK-4, CJ-4, CI-4 with CI-4 PLUS, CI-4, or CH-4 oils. Consult manufacturer recommendations to determine whether API FA-4 oils are suitable. API FA-4 oils are not recommended for use with fuels containing more than 15 ppm sulfur. For fuels with higher sulfur content, follow vehicle manufacturer recommendations.

Describes oils developed for high-speed four-stroke diesel engines to meet emission requirements for model year 2017 under both on-highway and Tier 4 emission standards, as well as previous years. These oils are formulated for all applications using diesel fuels with up to 500 ppm sulfur. However, use with fuels exceeding 15 ppm sulfur may affect aftertreatment durability and/or oil drain intervals. API CK-4 oils are highly effective in maintaining emissions control systems where particulate filters and other advanced aftertreatment systems are used. They offer improved resistance to oxidation, shear-induced viscosity loss, foaming, catalyst poisoning or clogging, particulate filter blockage, engine wear, piston deposits, loss of high- and low-temperature properties, and soot-related viscosity increase. API CK-4 oils exceed the performance criteria of API CJ-4, CI-4 with CI-4 PLUS, CI-4, and CH-4 and can be used where these categories are specified. If CK-4 oils are used with fuels exceeding 15 ppm sulfur, consult the vehicle/engine manufacturer regarding oil drain intervals.

Developed for high-speed four-stroke diesel engines to meet model year 2010 emission requirements under on-highway and Tier 4 standards, as well as earlier requirements. CJ-4 oils are designed for use with diesel fuels containing up to 500 ppm sulfur. However, use with fuels containing more than 15 ppm sulfur requires an emissions aftertreatment system and/or may shorten oil drain intervals. CJ-4 oils are highly effective with active emissions control systems using particulate filters and other preferred aftertreatment technologies. They provide excellent protection against catalyst poisoning, filter blockage, engine wear, piston deposits, thermal instability, soot buildup, oxidative thickening, foaming, and shear-induced viscosity loss. API CJ-4 oils exceed the requirements of API CI-4 with CI-4 PLUS, CI-4, CH-4, CG-4, and CF-4 and may be used where these categories are specified. When using CJ-4 oils with fuels containing more than 15 ppm sulfur, consult the vehicle manufacturer about oil drain intervals.

Introduced in 2002. Developed for high-speed four-stroke engines to meet 2004 emission standards introduced in 2002. CI-4 oils were formulated to ensure durability for engines equipped with exhaust gas recirculation (EGR) systems and are suitable for diesel fuels containing up to 0.5% sulfur. They may be used in place of API CD, CE, CF-4, CG-4, and CH-4 oils. Some CI-4 oils also qualify for the CI-4 PLUS specification.

Introduced in 1998. Designed for high-speed four-stroke engines built to meet 1998 emission standards. CH-4 oils are specifically formulated for use with diesel fuels containing up to 0.5% sulfur. They may be used in place of API CD, CE, CF-4, and CG-4 oils.

Introduced in 1995. For certain heavy-duty high-speed four-stroke engines operating on fuels with less than 0.5% sulfur. CG-4 oils were recommended for engines meeting 1994 emission standards. They may be used in place of API CD, CE, and CF-4 oils.

Introduced in 1990. For high-speed four-stroke, air-cooled engines and turbocharged engines. They may be used in place of CD and CE oils.

Introduced in 1994. For certain heavy-duty two-stroke engines. May be used in place of CD-II oils.

Introduced in October 2010 and developed to provide improved high-temperature protection against deposits on pistons and turbochargers. Stricter sludge control, enhanced fuel economy, improved emissions system compatibility, improved seal compatibility, and protection for engines running on ethanol-containing fuels up to E85.

Use GF-5 where GF-4 is required.

Use GF-5 where GF-3 is required.

Use GF-5 where GF-2 is required.

Use GF-5 where GF-1 is required.