Semi-synthetic Deliver excellent shock load and high temperature protection Reduce internal friction for increased horsepower output Contains strong detergent, dispersant and ZDDP anti-wear additives to help protect critical engine parts Designed to offer higher performance engines the cold temperature operational benefits of an SAE 20W engine oil Designed to offer higher performance engines the cold temperature operational benefits of an SAE 20W engine oil while providing the desired film strength, sealing abilities and bearing, crankshaft, piston ring and valve train component anti-wear protection of an SAE 50 weight oil at normal engine operating temperatures.