Master Mechanic, Gallon, Extended Life Long Life Formula Antifreeze, Compatible For Use In All Automobiles & Light Duty Trucks, Regardless Of Make, Model, Year Or Original Antifreeze Color, Its Inhibitors Provide Maximum Cooling System Protection Against Damaging Rust & Corrosion, Provides 150,000 Miles Or 5 Years Of Maximum Protections When A Complete Cooling System Flush & Fill Is Performed, Features A Phosphate Free & Silicate Free Formula, Meets ASTM D-3306, ASTM D-4340. Color Is Yellow.