Anyone know what is considered normal oil pressure for 3100?
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From: Elizabethtown Pennsylvania

I installed an oil pressure gauge yesterday in my new cutlass and its reading 25psi idle and around 40 psi 2000rpm (havn't had it higher yet) anyone know if it sounds normal for this engine? Thanks
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98 Service manual says for the Cutlass 3100 says 60 Psi at 1850 Rpms, with the engine warmed up using 5w-30 motor oil...
There are always some givens to that tho... When was the last time the oil was changed? What oil filter do you have on the car? What kind of oil are you using? I'd say even 50 Psi would be good above idle...
Do the lifters chatter after the engine has run a couple of minutes or is it really quiet?
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There are always some givens to that tho... When was the last time the oil was changed? What oil filter do you have on the car? What kind of oil are you using? I'd say even 50 Psi would be good above idle...
Do the lifters chatter after the engine has run a couple of minutes or is it really quiet?
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Thread Starter
Senior Member
Posts like a Corvette
Joined: Aug 2003
Posts: 1,205
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From: Elizabethtown Pennsylvania

Originally Posted by jr's3800
98 Service manual says for the Cutlass 3100 says 60 Psi at 1850 Rpms, with the engine warmed up using 5w-30 motor oil...
There are always some givens to that tho... When was the last time the oil was changed? What oil filter do you have on the car? What kind of oil are you using? I'd say even 50 Psi would be good above idle...
Do the lifters chatter after the engine has run a couple of minutes or is it really quiet?
There are always some givens to that tho... When was the last time the oil was changed? What oil filter do you have on the car? What kind of oil are you using? I'd say even 50 Psi would be good above idle...
Do the lifters chatter after the engine has run a couple of minutes or is it really quiet?
Originally Posted by h1081dan
Originally Posted by jr's3800
98 Service manual says for the Cutlass 3100 says 60 Psi at 1850 Rpms, with the engine warmed up using 5w-30 motor oil...
There are always some givens to that tho... When was the last time the oil was changed? What oil filter do you have on the car? What kind of oil are you using? I'd say even 50 Psi would be good above idle...
Do the lifters chatter after the engine has run a couple of minutes or is it really quiet?
There are always some givens to that tho... When was the last time the oil was changed? What oil filter do you have on the car? What kind of oil are you using? I'd say even 50 Psi would be good above idle...
Do the lifters chatter after the engine has run a couple of minutes or is it really quiet?
you dont want this happening:

^^ thats what happens when you ignore the dropping (by the day) oil pressure.
Originally Posted by DarkShadow
ok im pulling up
1100rpm-15psi
3000rpm-30psi
900rpm-10psi
from alldata for the 1999 Oldsmobile Cutlass 3.1 Vin J & M
1100rpm-15psi
3000rpm-30psi
900rpm-10psi
from alldata for the 1999 Oldsmobile Cutlass 3.1 Vin J & M
10psi at idle cannot be right
Originally Posted by Hans
Originally Posted by DarkShadow
ok im pulling up
1100rpm-15psi
3000rpm-30psi
900rpm-10psi
from alldata for the 1999 Oldsmobile Cutlass 3.1 Vin J & M
1100rpm-15psi
3000rpm-30psi
900rpm-10psi
from alldata for the 1999 Oldsmobile Cutlass 3.1 Vin J & M
10psi at idle cannot be right
(AND HANS GOD DAMNIT REPLY TO YOUR PMS FOR ONCE!)
Originally Posted by Hans
Originally Posted by DarkShadow
ok im pulling up
1100rpm-15psi
3000rpm-30psi
900rpm-10psi
from alldata for the 1999 Oldsmobile Cutlass 3.1 Vin J & M
1100rpm-15psi
3000rpm-30psi
900rpm-10psi
from alldata for the 1999 Oldsmobile Cutlass 3.1 Vin J & M
10psi at idle cannot be right
I installed an oil pressure gauge yesterday in my new cutlass and its reading 25psi idle and around 40 psi 2000rpm (havn't had it higher yet) anyone know if it sounds normal for this engine? Thanks
Oil just changed, 10w30 castrol syntec used, engine had piston slap, thats it as far as engine chatter is concerned, that is only when cold.
Shawn





