100% Synthetic "Fuel Economy" engine oil specially designed for recent gasoline engines, naturally aspirated or turbocharged, indirect or direct injection, designed to use oil with low friction and very low HTHS (High Temperature High Shear) viscosity (≥ 2.6 mPa.s). Suitable for modern gasoline engines requiring a viscosity grade 20 and fuel economy lubricant (API SP-RC, SP and/or ILSAC GF-6A standards). Recommended for all GM gasoline engines requiring GM-dexos1™ GEN2 specification: BUICK, CADILLAC, CHEVROLET, GM, GMC, OPEL and VAUXHALL. Catalytic converter friendly. This type of oil may be unsuitable for use in some engines. Refer to the owner manual if in doubt.