ChevySSR
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ChevySSR replied to the thread Shell Rotella 15w-40 motor oil.i went back to 5w30 mobile1 for the winter, I noticed absolutely no change in oil pressure after the oil change. I am monitoring the oil... -
VRP is a good cleaning oil, but takes several full oil change intervals to clean things up. For immediate unsticking of the piston...
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I looked that oil up and it ain't Dexos1 Gen 2 certified. That's the kind of oil GM spec'd to run in your motor and you chose something...
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