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Reply to "Overflow Tank Missing"

Your car needs an overflow tank to work properly. When the engine heats up, the water expands and no longer fits in the cooling system. So the radiator cap opens and allows the excess water to expand into an overflow tank. When the engine cools off, a partial vacuum is created, the cap again opens and water is sucked back into the cooling system from the overflow. Without such a tank, your cooling system will lose water each time you drive, and about the 3rd or 4th time, it will overheat. The overflow need not be a stock tank, but if its plastic, shield it from header heat, or it will melt. This happened to me in a 50 mile drive.
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