Quote:
Originally Posted by Kerk
Many years ago I had the same problem. Was advised not to fill to the very top because it leaves no room for expansion and when coolant gets warm and expands it goes out the overflow tube which can start a siphoning of the coolant. Worked for me.
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It's poor advise not putting the full 22 quarts in the system. This alone causes
elevated temperatures. The system requires VERY little room for expansion
below 205 degrees. Coolant is not siphoned out the over flow tube, it is
pushed or just natural over flow from coolant backing up in the tank. The problem was solved in the middle 40's when Ford installed a 4 lb pressure
cap. You don't see many posts about the later years losing coolant. G.M.