Originally Posted by Cab_Burge
Nor relative to your post on the small oil pressure loss at the upper RPM, I have seen a 8 HP gain on a wedge motor letting the oil temps go from 130F to 160F work
Ended up switching all my street builds to either 5W20Wt or 0W20 wt. Valvoline standard oil, not synthetic, and saw no gain or loss of HP going from 80F up to 220F oil temps shruggy




I run my wifes van with a 200,000 mile 5.9 magnum on 0w20, I run all my hemis on 0w20 and even my 6.4 in my 2011 3/4 ton with piston oil squirters and a "low volume" 5.7 oil pump still never drops below 20 PSI at idle even when the oil temp got to 230F

I am not causing global warming, I am just trying to hold off a impending Ice Age!