Rislone Liquid Aluminium Radiator Stop Leak is the ultimate product to help stop leaks and prevent costly repairs for your vehicles cooling system. The liquid aluminium formula will permanently seal up and fix any leaks instantly in your plastic, aluminium or metal cooling system, heater cores, welch plugs and gaskets. Rislone Liquid Aluminium also contains Xtreme Cool additives which help to prevent overheating and will lower the water temperature by reducing surface tension and improving heat transfer. It is safe to mix with all coolant types and colours and is even suitable to use with straight water; saving you the hassle of flushing the cooling system before use. 1 bottle of Rislone Liquid Aluminium will suit most regular size standard cooling systems, use ½ a bottle for smaller 4 cylinder vehicles and 1 bottle for every 12L capacity in larger applications.