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2005 Pontiac Grand Am Question: can exhaust gas get into coolant by a bad head gasket and is there a dye to show

 

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cps, 3.4L V6, Clarksville, TN, May 08, 2014, 10:03
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it. but no oil in coolant, or coolant in oil

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    pushrod May 08, 2014, 10:07
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    It can be tested for CO in coolant by having a combustion leak test performed. Most any auto repair shop should be able to do this. It does use a dye that changes color if CO is detected....but it takes a test 'kit' for testing!

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