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Old 03-17-2013, 12:46 AM   #6
68C15
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Join Date: Jan 2004
Location: next to my reloading bench
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Re: GM 3100 bad head gasket???

most likely the oily coolant is from a bad intake gasket and you also have a bad head gasket. I usually find them blown on the corner of the block by cylinder #1. sometimes I find the block eroded away.
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