Features: The Antifreeze Liquid is an environment-friendly product, made in advanced inimitable formula, ice-free, boil-preventing, anti-rust, dirty-proofing, applying it can protect evidently whole metallic water tank and its cycle system, and prevent rubber ring and water pipe from aging as well. It is not only excellent at ice-free function but also can prevent boiling in summer, which amends well work temperature of engine and prolong engines period of validity. It can be used in all season and should be exchanged every year.