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.