A very frustrating situation can arise where either the engine oil or automatic transmission fluid finds its way into the cooling system and mixes with the coolant solution. The oil will be present all over the engine, radiator, expansion tank, coolant reservoir and hoses.
This can happen through the following faults;
Leaking cylinder head gasketCracked cylinder headFaulty engine oil cooler or heat exchanger Faulty transmission oil cooler or heat exchangerHuman error (pouring engine oil into the coolant reservoir or expansion tank)
Removing oil from the cooling system can be a very difficult task to accomplish and it is one that requires a lot of patience and perseverance.
Luckily, commonly available dishwashers are very effective in getting rid of oil from t..