yeah I have a 4 mil. If you can prove it then I'm all for it, when my motor goes I'll swap it out. But I've heard a lit of second and third hand info. I realize what I said and you're right, so if someone can show me cylinders side by side or break it down using geometry and stuff then I'd like to see it. You mention manufacturers, if the 110 was such a problem wouldn't they stop making it and only sell the 115? so if someone can give me good reliable info then I'm all ears. Until then, I'm not believing it's gonna wear wrong of faster or oval cylinders.