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Old 10-05-2012, 01:46 PM   #4
ModBargains III
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Join Date: Sep 2011
Location: La Habra, CA
Posts: 1,078
My Ride: E46
White spots on the expansion tank means you're leaking coolant at the top once the heat and pressure gets up to the top... Not a head gasket issue, just an issue with leaking at the cap, or somewhere else around that area.

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