I have tried Engine Ice and others, but this stuff is the best. They claim it is Dyno tested and rated number 1, and who knows but I haven't found anything better. LP also has great bike wash and other stuff too. Great product!
Liquid Performance Racing Coolant and Antifreeze with LP3 keeps your motor running at just the right temperature for maximum engine performance in both summer heat and winter cold. Liquid Performance's LP3 additives reduce heat, friction, and internal engine wear and maintain more horsepower than all of the competitors tested. This Racing Coolant is legal for all AMA-sanctioned dirt track racing events.