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GMC 6500 with 366

3K views 12 replies 5 participants last post by  farmshop 
#1 ·
I am not happy with my old 1985 GMC 6500. There is anti freeze leaking through the clutch housing. I think a frost plug is leaking at the back of the engine but I cant see for sure. The mechanic said he will probably have to remove the transmission to get at it. Anybody had a 366 give problems like this?
 
#8 ·
Unfortunately it can easily get away on a guy in changing the coolant often enough, not to say that is the culprit in this case but those pieces of equipment that don't get used that much tend to get set on the back burner when it comes to coolant. Definitely change all frost plugs back there but I guess that goes without saying and some fresh coolant.
 
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