Extends life time of your engine at cold and hot weather conditions. Prevents calcification and oxidation of plastic and metal parts in places where water passes through. The main ingredient of our product is propylene glycol. And contains inhibitors which is protecting metal and plastic parts. Does not contain alcohol and glycerin. Reduces freezing point of cooling water. Raises the water boiling degree and prevents the radiator water from boiling in summer time. Prevents rust and corrosion which may occur in cooling system. You can use our product safely during 4 seasons.