Concentrated - concentrate treat rate is 3%Formulated to reduce engine temperatures and provides significantly better contact on heated surfaces allowing for greater and more efficient heat transferMixes with water and antifreezeIncreases cooling capacity and efficiencyApproved for race use on paved surfacesProtects against rust and corrosionDoes not offer freeze protectionGlycol, Nitrate, Amine, Borax freeFor 2-cycle or 4-cycle liquid cooled engines100% Biodegradable in its unused form16 ounce bottle