Some guy over on Bobistheoilguy ran a custom-crafted 0w-10 in his Jeep's 2.5l 4-cylinder for a few oil changes with no changes in his normal driving habits. There was no measurable increase in wear per used oil analyses.
That being said, I still can't get over running a 20-weight in my car's engine that specs 30-weight.
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2012 Chevrolet Cruze Eco 6MT
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