Prestone ready-to-use antifreeze coolant features a blend of 50% antifreeze coolant for temperature and corrosion protection and 50% demineralized water for heat transfer protection. For all makes and models of vehicles and can replace any color antifreeze. Extended life all weather protection. Up to 10 yrs/300,000 miles when flushed or filled. Exceeds all ASTM and SAE standards for corrosion protection. Protects all metals including aluminum. Maximum freeze-up/boil-over protection: -84 F. to 276 F. 1 gallon.