A Highly Effective Radiator And Cooling System Cleaner. It Removes Rust; Scale And Sludge And Helps To Prevent Corrosion. It Is Not Harmful To Hoses And Gaskets And Is Safe To Use In Aluminium Blocks. Add To Cooling System And Run For At Least 15 Minutes; Then Drain Radiator And Run Water Through Cooling System Until Exit Water Is Clean.
