Draining a 470 cooling system

[osborne looney]

my A/F is not quite up to my protection for -20 is there a drain plug somewhere so i can drain and refill with 50/50 mix

 

[stonyloam]

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.

 

[osborne looney]

Re: Draining a 470 cooling system

thank you -- getting rid of diluted A/F is not a problem -- service station in town will take it -- i can tilt boat/trailer all way up .
very little weight on ball part of trailer -- thanks again