Product Type: 50/50 AntiFreeze & Coolant Package Size: 1 gal. 1 Gallon Compatible for use in all automobiles and light duty trucks Can be mixed with all colors of anti-freeze Pre-diluted, r eady-to-use Provides 15 0000 miles or 5 years of ma ximum protection Meets AST M D-3306 and ASTM D-4 340 Inhibitors provide max cooling system prot ection against rust and corr osion Phosphate and silic ate free formu la