Prestone Extended Life Antifreeze (50/50) features a blend of 50 percent antifreeze/coolant for temperature and corrosion protection and 50 percent demineralized water for heat transfer protection, and is compatible with any antifreeze/coolant, regardless of color. For use in all makes and models of cars and light duty trucks, this patented formula provides a high degree of performance durability and carefully balanced protection against temperature extremes and rust corrosion of all cooling system metals, including aluminum. Good for 5 years or 150,000 miles, this antifreeze meets or exceeds ASTM D3306 and D4985 for corrosion protection.