Prestone Automotive Antize/Coolant 50/50 Pre-Diluted is a ready-to-use antize coolant that combines 50% antize coolant for superior temperature and corrosion protection with 50% demineralized water to enhance heat transfer. Designed to be compatible with all makes and models of vehicles, it can replace any color antize, providing extended life and all-weather protection. This formulation up to 5 years or 150,000 miles of reliable performance when flushed or filled. It exceeds all ASTM and SAE standards for corrosion protection and safeguards all metals, including aluminum. With a maximum ze-up protection down to -84°F and boil-over protection up to 276°F, this 1-gallon bottle ensures your engine stays protected in extreme conditions. Model Number: AF2100