Fully synthetic lubricant, suitable for modern gasoline engines requiring a viscosity grade SAE 0W-20 lubricant or a ?Fuel Economy? lubricant in viscosity grade 20: Standards API SN, API SN-RC and/or ILSAC GF-5.Compatible with catalytic converters.This type of oil may be unsuitable for use in some engines. Refer to the owner manual if in doubt.