Quote:
Originally Posted by Rick-sta
I've often wondered how does the overflow pipe work? I've got one on the PPD black expansion tank on my ZT. Now when I had a leaking cap on my bottle the coolant would leak out the cap with the pressure, so what stops the pressure from pushing the coolant out the overflow?
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Not sure who did it but someone on the forum dissected a rad cap to see how it worked and also gave a full explanation about it, Sorry cant think who it was
