Using this products regularly can prevent all parts of cooling system from depositting stains, getting rust and corrosion so that it can keep the water tank clean,eliminate the noises of water pump, and keep the cooling performance of the engine cooling system. Therefore, it can avoid a series of problems caused by the overheating of engine, boiling and leakage of water tank that results from deposits and corrosion, especially can avoid the corrosion of water bank caused by bad anti-freeze. It can be used together with all kinds of long life coolant and anti-freeze.