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How do I get all the air out of my coolant system? My 1993 Caddy STS 4.6L is running a bit hotter than it should and I was told this may help.

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WAIT TILL IT'S COOL, REMOVE RADIATOR CAP, TOP OFF WITH COOLANT DON'T PUT CAP ON. START CAR TURN HEATER ON WAIT TILL HEATER HOT, TURN OFF TOP OFF WITH COOLANT PUT CAP BACK ON, YOUR DONE,

Posted on Dec 15, 2016

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Raise the front of the car with a floor jack as high as possible, fill the coolant recovery tank right to the top, run the engine until it is hot, DO NOT OVERHEAT IT, turn off the engine and let it cool, the air that is trapped in the cooling system will gravity purge out, the level in the coolant tank will go way down, if it empties completely repeat. Ding the above WILL GET THE SYSTEM FREE OF ANY TRAPPPED AIR.

Posted on Dec 15, 2016

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1 Answer

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