Re: Water jacket - How clean is clean enough?
Once you get it running, fill it with vinegar and run it all summer. I have a Chevy Blazer that must have come from a warm state and had pure water in it for a while, because it had rust scale like you wouldn't believe. Three heater cores plugged up. I ran vinegar all summer a couple years ago and it took care of the problem. The water pumper crapped, not due to the vinegar as it had 235K miles on it, and when I took it off and looked inside the block it looked brand new. It takes a little time, but vinegar will take away the rust. Have fun. Rod
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