Lol well maybe I'll get lucky and get 3 out of 5 responses to be the same

 

that's a better way of looking at it. I think the most consistent awnser I've seen here is the 20W50 but that in no way means that's the right awnser.

 

Dollar general 5-30 in black bottle, yellow writing.

 

Just got the car running. Using t6 5w40

 

Any thoughts on this.

LS3 w supercharger, Forged motor with Clevite-77 bearings and 0.002" clearance, and im running with E85 fuel.

Been thinking of swapping to Rotella full synthetic? I´ve been using Mobil 1 / GM 5-30w earlier.

 

Rotella T
15w40
Stock 5.3L 100k miles?
Melling high pressure pump
47-50psi at 190 degree oil temps at idle.

I may actually step the oil down next time around. im gonna wait for the hot summer days to so.

Jay

 

15w40 rotella here

 

Royal purple 10-30

 

Ask your builder/machinist his thoughts.

 

I'm going to run Royal Purple HPS 10W-30

 

15-50 amsoil Dominator

 

I'm running VR-1 20-50. I'm asking the same because right now idle cold idle is 60psi and when she's hot at WOT I'm at 80psi. 5.3 twin turbo. I like the zinc in the VR-1 but concerned oil pressure is a little high. Would the Rotella T6 bring it down to around 50-75psi range?

 

I went from running VR-1 20w-50 to Rotella 15W-40. I frequently change my oil and it's good stuff for cheap.

 

Same as my oil pressure per the stock gauge (take it for what it's worth). My motor has been together for 3 years now.

I run Rotella 15w-40.

 

Did you guys see your pressure drop a little when you switched? I'm just concerned at the 80+ psi at WOT

 

VR1 20w-50

 

Martin, that's what I'm running now but my pressure is way high....60psi at idle and 80 at WOT. I've read Louis' thread on oils and zinc....it looks like Rotella 15w-40 has a good amount too. I just want to bring my oil pressure down a little.

 

Mine is 45-50 at idle and 75-80 at WOT.

 

Perhaps more important than which oil, how often are you changing it?

I run T6 5w-40 but I'm changing it after every 2 track visits, or roughly 6 1/4 passes. Is this overkill? Doing everything I know to keep the stock motor going strong.

 

Way over kill