My
I dont consider Oil Viscosity when I set bearing clearance, so bearing clearance or any other bottom end spec shouldnt be a factor for selecting Oil.
If you have 100 PSI at idle with thick oil, its a screw up anyways, and should be addressed, about 30% more oil pressure than needed.
I run thicker oil for added protecting from "break down" I dont run the zero weight oil, and very light oil. Sorry but a 1% increase in performance isnt worth it.
I try to run 15W-50.
This oil has been around a long time, and is the best I have tried. I will run a Semi Synthetic on occasion.
Great stuff here.
Run a Accumulator, it will provide more protection than anything else.
http://www.schaefferoil.com/
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