As the miles add up, your engine wears down. Decreased horsepower, excessive heat, sludge, and oil consumption are common signs of aging engines. Our premium motor oil in the MaxLife lineup, Valvoline Extended Protection Full Synthetic 5W-30 High Mileage delivers 70% stronger wear protection, 20% better sludge defense and 20X better heat protection than industry standards. Formulated with premium seal conditioners, it helps prevent and reduce oil leaks in high-mileage engines by restoring flexibility to hardened or shrunken seals, maintaining proper oil pressure, and minimizing consumption over time. It resists thermal breakdown and combats the effects of aging engines with powerful anti-wear additives and superior oxidation stability. Dual Defense Additive Technology combines innovative boosters fortified with a detergent system to fight deposits, corrosion and sludge that rob engines of power and fuel economy. Suitable for hybrid and gasoline engines, Valvoline MaxLife Extended Protection is proven to maximize engine life, whether you drive a Chevy, Ford, Toyota, Honda, or most other high-mileage vehicles. Switch to Valvoline MaxLife Extended Protection Full Synthetic High Mileage Motor Oil, engineered for ultimate protection and performance as the miles keep adding up.