Low oil pressure makes me nervous

You could argue a lot of things...but arguing over oil viscosity, that takes a lot of free time and a dose of crankiness. Save your breath and blood pressure. Its about clearances and app, I run 20 50w, before that i ran straight 30...in my near stock slants and 318's
I make enough hp that any 2-3 hp at 6900 from a 10 wt just doesnt mean a damn thing to me. Think of guitar strings, picks, sticks...diff weights,length,and firmness for different styles of playing etc..