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Old 09-07-2018, 06:57 PM
Mad_Professor Mad_Professor is offline
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Join Date: Mar 2008
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Start out with a pressure test of cooling system. See if it looses psi and if coolant goes down. Would indicate bad gaskets (head/intake) or cracked casting (intake/head/block). Unless you find a puddle under car.

Also look in radiator cap filler when motor running, fines bubbles indicate head gasket or cracked block/head.

Is coolant clean or any oil?

I can't see 2 1/2 gallons "extra" being in crankcase and the car even running? Coolant in oil will make a milky emulsion.

Pull off PCV valve, is it full of milky emulsion? E.g. water/coolant from the oil.

P.S. what is car/engine?
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