An anti-freeze and anti-corrosive offering superior corrosion protection. Non-toxic formula provides superior year round protection for all engines. Protects engines from freeze up and boil over while providing excellent corrosion protection. Modern engines today are made of a wide range of metals so its also important that any additives don’t react with the metals or cause galvanic reactions within the engines. Contains corrosion inhibitors, which protect against rust and corrosion of aluminium, copper, solder and brass.