JBauer47

My '08 Z06 oil pressure at idle when fully warmed up is 13-19. I live in FL so outside temps are usually 90+ during summer. Level seems fine and no warning lights are on. Should I take it in to the dealer ? I believe normal range is 20-80 depending on conditions. Will they even care if there is no light on?

MC

'06 Quicksilver Z06

13-19 is not good. I wouldn't start it up anymore until I got it checked out.

oicw

What oil are you using? 5w30 M1?

I'm using 5w40 Rotella T6 and I'm hitting 40 psi at 200deg oil temp. I believe you're still (technically) within spec so I don't know if GM would do anything, but it does sound low.

What's your high rpm pressure?

JBauer47

Running 5-30 m1

Max pressure I see with high rpm is 48.


MC

db2xpert

What's the oil temp?

gotjuice?

Bad main bearings?

bearphoto

My new 427 vert has low oil pressure at idle also and even at freeway speeds its only about 50 psi. seems low compared to my 09 Z06 427

GMuffley

Both idle and high RPM pressures seem low. Lowest idle I've seen was 27 on a 100 degree day idling in traffic.

GMuffley

^^^^^^^^^^^^^

Mobil1 5W30

Les

That's worrisome. Time to see your dealer. Good luck with it.

Dirty Howie

HOT idle (210*) is 30 psi with Mobil1 0w40. Its been that way since new, motor has 13K on it now. I would assume and know from my first motor that will be lower with Mobil1 5w30. How much lower ?????


DH

SlingindirtM95

Cars very with heat and conditions. If its been like that for a little while it would have already been a problem. I would suggest a thicker oil for sure

Too-Fast

First thing that jumped in my head when I read the OP's post.

Z06_505

I experienced similar low pressures when I first got my car in late 2005. The dealer said it was normal per the shop manual. Here is what your dealer will show you when you go in to have this checked. I thought these were shockingly low acceptable pressures and may be contributors to the valve dropping situation.

erikszr1

even at freeway speed the engine rpm's are very low probably about 2k, so in your case having 50psi cruising is very good...

erikszr1

i know thats what they will show you, hopefully not. you can throw that in the garbage because if these cars have anything lower than 22-23 psi you can bet the future for that engine will not be good. ill even step it up a bit and say 25psi is even a bit low. i have a question did this car your talking about ever have a problem? im gonna say yes but i hope not. i havnt seen one of these live very long with low oil pressure, not one......sad

Z06_505

Dropped #7 exhaust valve in April this year after 24,000 hard driven track miles and 10,000 street (34,000 total)

Surviving 67

My 2011 Z06 idles at 28 psi when warm and I've seen it as low as 26 it has less than 4000 miles on it and the oil (mobile 1 5W 30) has less than 500 miles on it.

No4Play

ditch the 5 30 m1

I run 60-70 psi at idle cold. 48-55 warm depending on outside temps. cruising speed (5th gear 65-70mph 2200rpm) I see avg 52 psi. 6th gear at 70mph I see 45-48psi. amsoil 10w40 high zddp.

DGK-ShoGUN

My low oil pressure turned out to be the bearings also! Long story short..it's done