[Swifty1638]

I saw a big difference in 15w 40 vs. 10w 30. The newer stuff my oil psi was around 80 at cruising/pulls, and around 50ish at idle, or just below. Old 10w30 it would be around 25 at idle, and 75ish max under load. I ran the oil feed off the filter housing, and no restrictor, and could have been the reason why my turbo detonated, and shifted the center shaft over.