Where does the coolant go from the overflow tank?
Where does the coolant go from the overflow tank? This lower pressure creates a vacuum and pulls the coolant from the overflow tank back into the cooling system via the small valve inside of the radiator cap. Expansion tanks are a little more complex. Pictured is the factory expansion tank from the FK8 Civic Type R, or the lesser version of the title image. Is there 6.0L oil in the coolant? I purchased a 2004 F250 with the 6.0 diesel. The truck had been running fine. I drove it 400 miles the day I bought it, and it had no...