... Features:1.Anti rust, restrain the scale formed, prevent the radiator overheating, reduce the cooling fluid vaporization and provide lubrication2.Prevent ... point, it's better way to fill it into the radiator directly.4.Widely use in the cooling system, environmental friendly ... ,Not contained nitrous acid, And phosphate.Direction:1.Use the radiator flush to clean the tank firstly; 2.Then add coolant ...