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Old 09-23-2024, 10:42 AM   #35
guyryan100
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Join Date: Sep 2001
Location: Cumming, GA
Posts: 481
Re: Sludge in coolant, high pressure

Yes dmjlambert that's a good point. Oil sits on top of the threads of several head bolts, blocked out of the coolant only by thread sealant. And the bolt holes are not sealed by the gasket so that same oil would sit on top of the gasket adjacent to sealed water ports. Vacuum in the cooling system could pull that in. I believe if that were happening, positive cool
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