Cooling System Additive - Flush Irontite 16 oz

Thoro Flush industrial strength radiator and engine cleaner loosens and removes rust, scale, grease, oil and sludge. Works in 15 minutes. Cleans auto and heavy duty truck cooling systems. Very expensive repair bills can be avoided by using Thoro Flush at least twice a year. Regular application helps extend the life of your vehicle, reduces the possibility of a clogged heater core, and helps keep cooling system fluid flowing. One bottle treats up to 6 gallons. HD trucks will require several bottles. Caution: Allow engine to cool so radiator cap or top radiator hose can be removed safely.