Quick Overview PEAK Antifreeze + Coolant 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. Specially formulated to deliver Superior Protection against damaging scale and corrosion Contains 10X the scale-fighting inhibitors to ensure maximum cooling system performance Universal formula is compatible with any color or type of antifreeze/coolant Meets the performance requirements of ASTM D3306 and D4985