Oil pressure

[quiksilver9531]

I just put in an autometer oil pressure gauge and i'm just curious as to what the oil pressure should actually be at idle and while driving.

 

[UnderPressureGT]

dude your making like 60 at an idle.. i wouldnt b1tch.. i wish i had the oil pressure you have lol

 

[Black1987Stang]

I got 10psi at a hot idle, I dont know how it's still running so good lol

 

[2000xp8]

On start up, 60 or so is good.

Hot idle around 20 and up.

diddle, mine ran fine with my last motor for about a year with 7 psi at hot idle, then she let go.

 

[Scott_B]

Mine is 60 when started and cold. under normal highway driving stays around 50-55. At idle when hot stays around 40-45 or so.

 

[HISSIN50]

helps to know about oil viscosity used and ambient temps.

 

[Michael Yount]

As you can see - there's no one answer to your question. It varies depending on things like how much wear and tear is on the engine (as the bearings/clearances open up, pressure drops), weight of oil, temperature of oil, engine rpm, etc. A generally accepted rule of thumb is that you want 10 psi of pressure for each 1000 rpm (6000 rpm would like to see at least 60 psi); and a minimum of 15-20 psi at idle; more would make me feel more comfortable. Most pump have some sort of internal spring-loaded bypass that limits high pressure to some preset level. Stock type pumps are usually set so they won't exceed 60-70 psi.

Mine when cold (0 degrees - 90F) will jump straight up to about 65 psi at idle or with higher revs. As the oil temp increases, that pressure drops off a bit. At 210F oil temp, mine idles (800 rpm) with about 30-35 psi, and with revs hits a max of about 55-60 psi. My short block has about 66K miles on it - original rings/bearings. The oil pump was replaced with a new, stock pump at 52K miles when I pulled the motor for performance upgrades. In winter I run 5W-30 weight oil; in spring/summer/fall - 10W-30 or 10W-40 (depending on what's on sale at WalMart).

 

[Hissing Cobra]

My engine is relatively new with about 6,000 miles on it and at a cold start, it's about 60 psi. When warmed up, it'll hover between 50-55 psi while driving (depending on the rpm range) and 45-50 while idling.

I use Castrol GTX 10W-40 motor oil and changed it after the cam break in, at 1,000 miles, and at 3,000 miles.

 

[Flyin88LX]

My engine has 115,000 on it and runs 20 plus at idle and 60 going down the road

 

[89tang]

Mine on start up goes to between 65 an 70psi, warm idle around (800-900rpm) it sits right about 20psi an while driving it's right around 50psi shoots up to 65psi if i get on it. My motor prolly has around 5000 miles on it i'm not exactly sure i bought it used 10w30 oil too