What should oil pressure be?

Reply Subscribe

Thread Tools

Search this Thread

Jul 1, 2014 | 01:18 PM

#76

EZEARL

CF Veteran

Joined: Aug 2009

Posts: 5,676

Likes: 301

From: WV

Year: '96

Model: Cherokee

My wife's '96 Blazer reads almost the same as the XJ. I've got a mechanical set up sitting in the garage (good place for it). I should hook it up.

Jul 1, 2014 | 01:20 PM

#77

SteveMongr

Beach Bum

Joined: Jul 2011

Posts: 6,123

Likes: 22

From: Cape Hatteras, North Carolina

Year: 2000 WJ

Model: Grand Cherokee

Engine: 4.0

Quote:

Originally Posted by Epk5150

Well its good to know I am not the only one whose oil pressure is reading a little on the high side compared to some others. Either way, once I replace it I will let you guys and gals know.

My oil pressure runs a bit high also according to the stock gauge, using 10w-30.
Higher with Rotella 15-40.
However, it's about flow and not pressure.
To be sure it's flowing, use a flashlight and look in the valve cover.

Jul 7, 2014 | 12:54 PM

#78

Epk5150

Member

Joined: Mar 2014

Posts: 197

Likes: 0

From: Virginia Beach, VA

Year: 1996

Model: Cherokee

Engine: 4.0L

I replaced my oil pressure sending unit and it did change the readings slight but not drastically. Now I read around 40psi while driving and around 20psi at idle. Just thought I would give you guys an update.

Jul 7, 2014 | 03:08 PM

#79

clambersky

Newbie

Joined: May 2014

Posts: 16

Likes: 0

Quote:

Originally Posted by bigbadon

Yeah, young people don't realize 30 wt was the only option way back when. I remember building fires under the oil pan in the winter to thin the oil enough to turn over. Engines in cold climates were wearing out in 60k miles b/c they were not getting lubricated. Trying to raise oil pressure is meaningless anyway. Low pressure does not indicate a lubrication problem...it indicates a WEAR problem and no amount of oil pressure is going to rectify that!

Best thing I have read in a long time.