I noticed that my radiator overflow tank keeps going dry. This is the second time that I have noticed that. Normally when I do any sort of work dealing with coolant removal, I fill the radiator and I also make sure there is enough coolant in the overflow tank between the H-L marks on the stock overflow tank. This weekend I had the bumper off and I noticed that the tank is once again empty. I do not have a coolant leak as I have a pressure tester which I test to verify and I have zero leaks. I don't find any coolant puddles on the drive way either. No head gasket issues as I just checked with a block tester and everything is A OK! The radiator is full, just that my overflow tank is bone dry. Any ideas where the coolant is going?
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