Re: Draining a 470 cooling system
There is a drain on the port side of the block and the forward plug on the heat exchanger drains antifreeze. The problem is not draining out antifreeze, it is catching and disposing of what you take out. What I would do is take my antifreeze tester and suck antifreeze (would think a quart or so should do it) out of the reservoir, and refill with 100% automotive antifreeze. May take a little while, but you won't have toxic antifreeze all over.