If your Legend Car runs the liquid-cooled Yamaha FZ-09/MT-09 triple, coolant is one of the cheapest levers you have on cylinder head temperature. We compare five race coolants across paved ovals, dirt, and road courses: SuperCool Extreme, Stay Frosty Race Ready, Ice Water, Engine Ice, and Liquid Performance HP Racing Coolant — including which ones survive a glycol-free tech inspection.