Quote:
Originally Posted by TheSilverBuick
Oil is more religion than science. Yeah the wrong oil or viscosity can certainly screw you, but there is little difference between optimal and good enough.
I know a guy that's had multiple ~700hp big block Chevy engines, doing drag and drives, buys the cheapest walmart shelf oil, changes his oil regularly, periodically sends oil in for analysis and it always comes back good. Put tens and tens and tens of thousands of miles on those engines.
Me, I adjust viscosity to see the oil pressures I like while driving, and put a zddp additive in my non-roller engines, run the engines hot enough to burn off moisture and any fuel that got by the rings, then change the oil regularly enough it doesn't sludge up.
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I am running VR1 right now because of the flat tapper cam. I hate oil discussions in general but I would like to see a round table on this because 10-30 to me is thin and 20-50 puts me damn near 100 pounds cold. If I could put 15-40 in with a bottle of Lucas additive and feel secure both I and my wallet would be happy as hell.