Quote:
Originally Posted by guyatou
I inherited a 1930 Model A from my grandpa. I got to take it home this weekend and start working on it -- the radiator isn't flowing properly and it overheats quickly. Hopefully it's just full of grease. Anyway, I hope to have it back on the road this fall after this and a few other repairs!
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Take that radiator and lay it flat, face down, pour a gallon of vinegar in the lower hole and let it sit a day or two, drain it back into the jug from the TOP with a cheese cloth filter, then begin filling it with water and always keep the top pointed down and that should break loose the rust and the oil/grease in it. Sloshing the vinegar around will help some, but always try to keep the upper tank at the low point. Try not to let the crud you shake loose back into the radiator.