Two-phase formula for adding to antifreeze before replacement. Dissolves and removes scale and rust, decomposition products of coolant and oil residues that form during operation in liquid and combined cooling systems. • Normalizes operating temperature • Protects the engine from overheating • Increases the lifespan of the radiator, pump and thermostat • Extends the life of new coolant by 30-40% • Compatible with all types of coolant