What do you consider normal oil pressure?

[08grey]

Mine is about 20 at idle never lower other trucks i have been in are about the same. 5w30 6.2l

 

[Rocket Man]

My '02 6.0 L runs 40 at idle, 50 above idle.

 

[t.stimpson]

my 09 runs around 20 at idle, around 35-38 at highway speeds.

 

[MichaelSE]

09 L76, I don't think I've ever seen 40 at idle. It's usually 20 at idle, 40 or a bit below cruising on the highway like the above poster.

 

[Rocket Man]

I changed my oil yesterday and was checking it out. I noticed normal easy driving it's around 50 but above about 3000 rpm it's 60. And no lower than 40 at idle. 168,000 miles. I wonder if the NBS are different than the NNBS.

 

[t.stimpson]

I agree, there is something different. This pic is from my 04 yukon, lots of miles on it and better psi.

 

[retiredsparky]

My 2005 tahoe has 40psi at idle. Those that have lower pressure could have a broken o-ring on the oil pickup tube. Or less likely, oil pressure regulator with a weak spring, worn oil pump gears or worn main bearings.

All oil filters have a bypass valve, so that if the filter gets clogged engine oil bypasses the filter. So even a dirty filter will not cause low oil pressure.

 

[Meccanoble]

from the gauge, anything between 20-60 should be fine. Lower when engine not being used as hard and on the higher end when going hard. The question is what do you do when it goes below the 20 or above the 60?

 

[08grey]

So the consensus so far is 40 at idle nbs 20 at idle nnbs?

 

[Rocket Man]

So the consensus so far is 40 at idle nbs 20 at idle nnbs?

So far that looks like to be what everyone is seeing.

 

[YukonandtheHOE]

DOD engines have weaker Pressure Relief valves, to compensate for the system's crazy high pressure cylinder cut out solenoid's.

 

[Meccanoble]

I wonder if 2007+ with AFM removed/disabled also idle higher at 40. Maybe low idle due to only 4 cylinders being used?

 

[MichaelSE]

They do not unfortunately. My AFM is disabled and it still idles close to 20. Besides that, even with AFM equipped vehicles, the ECM is programmed not to enter V4 mode at idle.

 

[YukonandtheHOE]

The relief vavle is in the oil pump. What Oil do you guys use? In my 07 i use Royal Purple 5w30. Im 40 psi cold and 25-30 psi at operating temp..

 

[sumo]

Wouldn't matter anyways. Afm is only during movement and not at idle.

 

[ta07hoe]

My 02 2500hd with a 6.0 was 40-50 at idle and 60 while driving. I had it from 160-193,000 miles . My 07 5.3 Tahoe is 40 idle 50-60 driving. I just got it and it had 160 on it. The 02 got dexos 07 has mobile 1 both were 5w30.

 

[Kingx1]

My 04 Yukon XL 2500 6.0L has around 20 at idle and 40 driving it

 

[Jimmy John]

My 2004 Suburban 5.3 with 220,000 shows 20 at idle and 42 on the highway.

 

[joshcarl]

10psi per 1k RPMs minimum is what i've been told on other LS forums.

 

[TheAutumnWind]

So the consensus so far is 40 at idle nbs 20 at idle nnbs?

mine is definitely ~20 @ idle and ~40 @ cruise