Is there a coating on the inside of the valve cover?
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2016 Chevrolet SS, 2006 Cadillac STS-V
Is there a coating on the inside of the valve cover?
I'm finally getting around to replaceing my right valve cover gasket again (both were done under warranty the last time). Once I got the valve cover off and started cleaning it, it looks like there is/was a coating (paint??) on the inside of the valve cover and in the groove for the seal that is coming off. Has anyone seen this before? It makes me a little nervous now that I know. Nothing has shown up in my oil analysis, but I'm afraid it might now that I've disturbed it.