COOLANOL IS A PREMIXED READY-TO-USE 50/50 BLEND OF PREMIUM QUALITY ETHYLENE GLYCOL BASED ANTIFREEZE AND DEIONIZED WATER TO PROVIDE OPTIMUM COOLING, WATER PUMP LUBRICATION AND RUST & CORROSION PROTECTION FOR ALL ALUMINUM AND MAGNESIUM MOTORCYCLE, ATV AND SIDE-BY-SIDE LIQUID COOLED ENGINES. COOLANOL ALSO CONTAINS ANTI-FOAM AGENTS TO REDUCE WATER PUMP CAVITATION AND INCREASE COOLING CAPACITY. COOLANOL 50/50 BLEND PROTECTS FROM FREEZE-UPS IN WINTER DOWN TO -34F(-37C). COOLANOL ALSO RAISES YOUR COOLING SYSTEMS BOILING POINT TO 265F(129C) WITH A 15 LB. RADIATOR CAP.