Yea I have heard of people using mean green and restor radaror flush. You should think of replacing all your radiator hoses my buddy is a master Powerstroke mechanic and he says if you don't that the hoses will break down and fail due to the oil. But I don't know.
Simple Green HD is what a Tech I know uses. It is not easy! His recommendation is to replace all rubber components in the coolant system as well as the radiator and the heater core after flushing as much out as possible.
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