Lubriguard 20W-50 Premium Passenger Car Motor Oil (PCMO) is formulated to provide engine protection under severe operating conditions. Lubriguard 20W-50 is blended from selected and highly refined base oils compounded to provide protection against wear and corrosion, prevent oxidative thickening and inhibit promotion of engine acids, sludge and varnish deposits. Lubriguard 20W-50 may be used over a wide temperature range. It also permits easier cold weather starting and helps minimize engine friction at start-up Recommended for al major automotive gasoline and diesel engines, including those equipped with superchargers, used in passenger cars, light trucks, power boats, motorcycles and other mobile and stationary equipment. Meets API Service Category SL.