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    Thinking of switching from M1 oil...

    Hey guys, I own a 2011 Silverado 6.2L, and I have been running Mobil 1 in my last 2 trucks for probably 5 years now. Lately I have been seeing around the net that Mobil 1 might not be preventing wear as good as it should be. I've always wondered how Castrol Edge is, and I was thinking about...
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