Wynn's Extreme Cooling System Degreaser removes oil and sludge in the cooling system of vehicles.Removes oil and sludge in the cooling system (caused by a leaking heat exchanger or cylinder head gasket).Degreases and cleans the entire cooling system.
For all “water” cooled systems of petrol, diesel and LPG engines.
One bottle of 325ml treats cooling systems up to 7 litres.
Add Wynn’s Extreme Cooling System Degreaser directly into the radiator or via the expansion tank if part of the system circuit.
Warm up the engine with the heater control in HOT position.
Let the engine run at idle for 20 minutes.Stop the engine. Drain the system, flush with water, close the system and refill with water.Let the engine run at idle for 5 minutes. Heater still in HOT position.Stop the engine. Drain the system, flush with water until clear, close the system and refill with coolant.
For engines with extremely heavy oil contamination a second treatment may be required.For rust and scale removal, please use Wynn’s Cooling System Flush. Add Wynn's Cooling System Stop Leak as a leak preventive agent.