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International Automotive Technicians Network
Re: 2008 Mck rocker arms
Posted to HD/Fleet Forum on 8/25/2020

I've seen this before. Here in the humid South Carolina area when trucks sit for a period of time unused this happens. Also if you've got an oil cooler or head gasket issue where an extreme minute amount of coolant getting into the oil this can happen. Then yo... Login to read more.