[Z06] Oil pressure
Instructor
Joined: Mar 2010
Posts: 185
Likes: 3
Id like to see some responses to this as well. I'll throw mine on here.
2002 EBZ, 59k miles, stock engine with 2000 miles on this 5w-30 mobil 1.
39psi cold start up, 29-30psi Idle at 190 degree oil temp. 40-60psi at rpm.
2002 EBZ, 59k miles, stock engine with 2000 miles on this 5w-30 mobil 1.
39psi cold start up, 29-30psi Idle at 190 degree oil temp. 40-60psi at rpm.
Racer
Joined: Nov 2008
Posts: 257
Likes: 0
From: Plano IL
2003 50k miles with a few bolt on but stock internals.
Cold start: 45-46 psi
hot idle 210 oil temp after driving for a while: 32-33 psi
Driving: 40-60+ depending on revs
Castrol European spec 0w30 synthetic
Cold start: 45-46 psi
hot idle 210 oil temp after driving for a while: 32-33 psi
Driving: 40-60+ depending on revs
Castrol European spec 0w30 synthetic
Racer
Joined: Oct 2012
Posts: 438
Likes: 52
From: Baltimore County, Maryland
Do your cars start out really low when you first start up then build to the specified pressures? Mine starts for a split second at like 18psi then builds to the 35-45 range depending on temp. Should I be concerned or is this normal for a start up?
Pro
Joined: May 2012
Posts: 666
Likes: 30
From: Milwaukee WI
with mobile 1 5-30 i see
40+/-2 at cold start
30+/-2 at warm idle which varies from 195 on the freeway to 220 in traffic or on the street putzing.
at around 270 oil pressure really struggles to build much past 40-45 even up around 6k
with m1 0-40 cold and warm idle are pretty much simmilar though at 2-3k on the street its definately higher.
I also will see over 50psi on the track till oil temps get up to 285-289 at which point they peak at about 45 at 6k. I dont like gettin git hotter than that anyways so its time for a cooldown lap at that point.
40+/-2 at cold start
30+/-2 at warm idle which varies from 195 on the freeway to 220 in traffic or on the street putzing.
at around 270 oil pressure really struggles to build much past 40-45 even up around 6k
with m1 0-40 cold and warm idle are pretty much simmilar though at 2-3k on the street its definately higher.
I also will see over 50psi on the track till oil temps get up to 285-289 at which point they peak at about 45 at 6k. I dont like gettin git hotter than that anyways so its time for a cooldown lap at that point.
Racer
Joined: Apr 2006
Posts: 322
Likes: 22
From: Tulsa
This is an interesting question, I was curious about the same thing since the pressure in my z06 seems to be higher than any other car I've owned. Cold start at idle around 40 to 45 (Depending how cold)...
Oil temps at 210-225 it settles into a 28-32psi. Today it was warm out and I got on it a few times and oil temps went up to 235 and pressure driving at 25mph in the neighborhood at 1500 rpm was about 32, at idle in the garage with 235 temps it was 26 or so. At 45mph it hovers around 40-42psi at in 4th and 5th gear. As soon as you throw it down into third pressure is up in the 50s and at 45mph in 2nd gear, pressure is 58 to 60psi even if you're holding a steady speed.
My trans am with the LT1 would settle into a 20 psi hot idle...my old z28 that had a spun bearing would idle at 12, but man I put some hard core miles on that car and the 305 never gave up the ghost.
Oil temps at 210-225 it settles into a 28-32psi. Today it was warm out and I got on it a few times and oil temps went up to 235 and pressure driving at 25mph in the neighborhood at 1500 rpm was about 32, at idle in the garage with 235 temps it was 26 or so. At 45mph it hovers around 40-42psi at in 4th and 5th gear. As soon as you throw it down into third pressure is up in the 50s and at 45mph in 2nd gear, pressure is 58 to 60psi even if you're holding a steady speed.
My trans am with the LT1 would settle into a 20 psi hot idle...my old z28 that had a spun bearing would idle at 12, but man I put some hard core miles on that car and the 305 never gave up the ghost.
Last edited by 6SpeedTA95; Aug 2, 2014 at 04:22 PM.
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Pro
Joined: Nov 2000
Posts: 595
Likes: 40
From: Harrisonburg Virginia
02 Z06 with 21k miles
Stock internals, bolt-ons and procharger
Mobile 1: 5w-30
Cold idle: 40-42psi
Hot Idle(200-210 oil temp) : 34psi
At highway cruise(~200 oil temp) at 1700rpm: 44psi
60+ psi at higher rpm
Wayne
Stock internals, bolt-ons and procharger
Mobile 1: 5w-30
Cold idle: 40-42psi
Hot Idle(200-210 oil temp) : 34psi
At highway cruise(~200 oil temp) at 1700rpm: 44psi
60+ psi at higher rpm
Wayne
Racer
Joined: Apr 2006
Posts: 322
Likes: 22
From: Tulsa
Yes, that's normal. Right after you start it up the car oil pressure will come up over the first 5 to 10 seconds or so....at least the gauge does, maybe it instantly gets to pressure but the analog gauge responds slowly?