[marklsx]

Originally Posted by Bo White

My stock bottom end is tired. Doesnt run near as strong as it did even a year ago. My oil pressure isnt impressive either. Not bad but not what I remember not too long ago. I decided to swap to a thicker oil. Been running Mobil 1 10w30 since day one with awesome success. 2 Blackstone tests with rave reviews. I was going to try a 20w50 so imo of whats best thats readily available over the counter anywhere is the Valvoline VR1. My results:

Mobil 1 10w30
47lbs cold idle/22lbs hot idle
Valvoline VR1
43lbs cold idle/30lbs hot idle

Have you considered swapping the oil pump for a melling high volume high pressure unit. I think the intended use is higher mileage engines. I have one and the pressure runs about 3.9 bar cold, about 2.8 bar hot.

I'm at ~113k miles now. I run mobil 1 5w30 - also 8oz of Red Line engine break in additive at oil changes for extra zinc & phosphorus.

I think you posted a compression test a while back that looked pretty good. That LS3 is just getting broken in at 150k.