PEAK GLOBAL LIFETIME 50/50 ANTIFREEZE IN 55 GAL DRUM. PATENTED ADVANCED ORGANIC ACID TECHNOLOGY THAT PROVIDES GUARANTEED LIFETIME PROTECTION ON YOUR VEHICLE.INHIBITORS PROVIDE MAXIMUM PROTECTION AGAINST DAMAGING RUST & CORROSION. USE IN ALL VEHICLES. TOP OFF ANY OTHER ANTIFREEZE. MEETS ASTMD-3306 & ADTMD-4340 55 GAL STEEL DRUM