Thread: 32 ford coupe - AFCO radiator - Overflow level?

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Originally Posted by jerry clayton

IF you have a radiator pressure cap for a coolant recovery system the radiator will heat,expand,overflow excess into tank and suck it back into the radiator on cool down--thus keeping the radiator full to the brim----If you don't have a recovery system--when the coolant expands and overflows into the catch can-- it is out of the system forever---

Thanks for adding that Jerry!!! My bad, I assumed it was the correct radiator cap--shouldn't do that, huh????