Qualiguard 20W-50 is a high-quality mineral oil that combines high-quality base oils with high-performance additives to provide excellent performance in the areas of detergency, while protecting against wear and corrosion. Qualiguard 20W-50 motor oil is recommended for use in gasoline engines. It helps reduce engine wear and corrosion and keep the engine clean. It is a multigrade motor oil that allows easier starts at low temperatures and has good high temperature properties. Qualiguard High Performance 20W-50 meets and exceeds API SL requirements.