HELP: How Do I Lower Oil Pressure
Thread Starter
CF Veteran
Joined: Oct 2008
Posts: 1,052
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From: Wyo
Year: 1996
Model: Cherokee
I recently replaced my light only gauge cluster for one with actual gauges (oil pressure sensor replaced for the correct one) and I learned that my 96 XJ's oil pressure is always between 40-60 (mostly at about 60). What can I do to lower it? My rig has about 150k miles and some relatively minor oil leaks already.

1. Should I run additives (I'm concerned about making my leaks worse)?
2. What about running ATF (I just read this on another thread on this forum and am interested, but how long can/should I run the rig with ATF in the crank case?
3. I just bought a valve cover and oil pan gasket. Should I use any cleaners before I pull the cover/pan? I have access to a provessional parts cleaner so I WILL get out any gunk/sludge.
4. With the covers off I will want to clean off the parts I can get to. Can I spray the engine components behind the cover/pan with brake cleaner?
5. What else should I know about or do to help get my oil pressure down to normal?
Thanks,
s

1. Should I run additives (I'm concerned about making my leaks worse)?
2. What about running ATF (I just read this on another thread on this forum and am interested, but how long can/should I run the rig with ATF in the crank case?
3. I just bought a valve cover and oil pan gasket. Should I use any cleaners before I pull the cover/pan? I have access to a provessional parts cleaner so I WILL get out any gunk/sludge.
4. With the covers off I will want to clean off the parts I can get to. Can I spray the engine components behind the cover/pan with brake cleaner?
5. What else should I know about or do to help get my oil pressure down to normal?
Thanks,
s
Thread Starter
CF Veteran
Joined: Oct 2008
Posts: 1,052
Likes: 0
From: Wyo
Year: 1996
Model: Cherokee
Senior Member
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From: tan house white shutters key's under the flower pot
Year: 1996
Model: Cherokee
Engine: 4.0
CF Veteran
Joined: Jul 2008
Posts: 1,217
Likes: 7
From: Schnecksville, PA
Year: 94 XJ
Model: Cherokee
Engine: 4.0L
Runnng 60psi...youre on the safe-end of the scale.
Only worry when the needle does a nose-dive.
Many run at the lower number and would kill for the numbers you have.
Embrace it. Be proud.
Only worry when the needle does a nose-dive.
Many run at the lower number and would kill for the numbers you have.
Embrace it. Be proud.
If you run a thinner oil like 10-40, It will come down. thats what I was running, and I was worried, because my pressure was 20-30, but I just changed to a heavier oil, and now I'm about 60 on start, and then 40 most other time.
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CF Veteran
Joined: Nov 2008
Posts: 2,473
Likes: 9
From: Paso Robles Ca
Year: 1991
Model: Cherokee
Engine: 4.0
I recently replaced my light only gauge cluster for one with actual gauges (oil pressure sensor replaced for the correct one) and I learned that my 96 XJ's oil pressure is always between 40-60 (mostly at about 60). What can I do to lower it? My rig has about 150k miles and some relatively minor oil leaks already.

1. Should I run additives (I'm concerned about making my leaks worse)?
2. What about running ATF (I just read this on another thread on this forum and am interested, but how long can/should I run the rig with ATF in the crank case?
3. I just bought a valve cover and oil pan gasket. Should I use any cleaners before I pull the cover/pan? I have access to a provessional parts cleaner so I WILL get out any gunk/sludge.
4. With the covers off I will want to clean off the parts I can get to. Can I spray the engine components behind the cover/pan with brake cleaner?
5. What else should I know about or do to help get my oil pressure down to normal?
Thanks,
s

1. Should I run additives (I'm concerned about making my leaks worse)?
2. What about running ATF (I just read this on another thread on this forum and am interested, but how long can/should I run the rig with ATF in the crank case?
3. I just bought a valve cover and oil pan gasket. Should I use any cleaners before I pull the cover/pan? I have access to a provessional parts cleaner so I WILL get out any gunk/sludge.
4. With the covers off I will want to clean off the parts I can get to. Can I spray the engine components behind the cover/pan with brake cleaner?
5. What else should I know about or do to help get my oil pressure down to normal?
Thanks,
s
Mine has always stayed about 40ish, Today was the first time I drove it when it was warm (only had it a month now) It stays around 60 moves around some, and 40 at idle, I was freaking out going home just cause I've had so many problems so far, So around 60 is ok driving?
Member
Joined: Dec 2008
Posts: 150
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From: Port Huron, MI. USA
Year: 1995
Model: Cherokee
Engine: 2.5L
CF Veteran
Joined: Mar 2008
Posts: 2,088
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From: South Side Chicago
Year: 1992, 2- 1998 (All 3, 4 Doors)
Model: Cherokee
Engine: 4.0L in all
Hell, I'd love having 60 all the time. That means your bearing clearances are outstanding, wish mine was like that...
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