Mag 1 10W-30 passenger car motor oil contains only the highest quality, hydrotreated, paraffinic lubricating oils and a technologically advanced additive system, which includes detergents, dispersants, viscosity improver, anti-wear and anti-friction agents, and oxidation and corrosion inhibitors. 5 Qt For use where 10W30 engine oil is called for Superior chemistry, superior performance Reduced friction for excellent protection against engine wear and improved fuel economy High resistance to viscosity and thermal breakdown Fights volatility burn-off to minimize engine deposits and exhaust emissions Mag 1 conventional oils provide outstanding sludge & oxidation protection.