PEAK® Antifreeze + Coolant, gallon, 50/50, formulated for use in all vehicle Makes and Models and is specially engineered to deliver guaranteed superior lifetime protection *. Its advanced universal formula contains a proprietary blend of 10X the scale-fighting inhibitors* coupled with robust organic additives to fight against the damaging effects of scale deposits and corrosion. PEAK Antifreeze + Coolant is free of 2-EHA, silicate, nitrite, borate, and amines, ensuring maximum cooling system performance for 10+ years/300,000+ miles*. It is compatible for use with any color or type of antifreeze/coolant in the system. *Lifetime Protection: 10+ years/300,000+ miles lifetime guarantee when a complete cooling system flush and fill is performed and proper cooling system maintenance is followed. Always follow the vehicle owner's manual for top-off requirements, change intervals, and specified maintenance. Color Is Yellow.