It is an ethylene glycol based high quality antifreeze. Protects the cooling system against rust, corrosion, oxidation and foaming thanks to its special additive formulation. Used safely for four seasons in the water cooled petrol and diesel engine cooling systems. Prevents the freezing of water in the cooling system in winter and boiling of coolant in summer. Lowers the boiling point of coolant water. Increases the boiling point of water and prevents boiling of coolant liquid in summer. Prevents rust and corrosion in the cooling system. Protects all metals perfectly against rust and corrosion.