MAG 1 5W30 GM Dexos1 Full Synthetic Oil 5qts PN#64193 with FREE AnySafe V20 KF80 Face Mask Advanced formulation provides the highest level of engine protection, even under severe operating conditions 100% synthetic base oils provide exceptional resistance to high-temperature oxidation Sophisticated FMX additives prevent sludge formation, keep pistons cleaner while maintaining power, and maximize fuel economy Latest API SN specifications; also exceed ILSAC GF-5 requirements for newer vehicles, minimizing oil consumption Chemistry significantly outperforms industry requirement, reducing sludge to near zero Emission conserving: protects the environment by protecting Licensed by and exceeds GM dexos1 specifications for worldwide GM gasoline engines 100% Made in the USA ALWAYS FOLLOW VEHICLE MANUAL FOR CORRECT APPLICATION OF FLUIDS For automotive gasoline engines, 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 SN oil will provide full protection.