Suitable for all aluminium, plastic and steel radiators of cooling systems in petrol, diesel and LPG engines. Compatible with water, cooling fluids and convetional anti freeze. Shake well before use. Add contents of one bottle to the radiator, drive for about 30 minutes and drain cooling system. Flush with water and refill cooling system. Be careful when opening or draining the radiator / cooling system: hot coolant or steam might escape from the system. One bottle is sufficient for cooling systems with a volume of up to 12 litres.