Oil pressure
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Junior Member
Joined: Feb 2002
Posts: 90
Likes: 0
From: PA
Car: 1986 Iroc
Engine: 305 TPI w/30,000 original miles
Transmission: 700r4 Transgo Shift Kit
Oil pressure
Sometimes when i start my car, the oil pressure will stay at 30psi even when i accelerate hard, just 30. Other times when i start my car itll be like 50 and stay up or around 45. Why is there so much variation? What could be causing this, and how much pressure should there be at idle and at wot?
TGO Supporter
Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
It will be higher when the engine is cold. And above 1500rpm, it should always stay about the same.
Supreme Member
Joined: Nov 2001
Posts: 1,886
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From: Jacksonville, NC
Car: Guess
Engine: Crazy 8
Transmission: So close to being a manual I can taste it
A rule of thumb for oil pressure is to have 10psi for every 1000rpm. If your engine stays at about 30 all the time that is okay, but it would mean, to me, there is either a bad guage, leak, or excessive oil clearances inside the engine.
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