Oil pressure PSI after oil change

[NonHyphenated American]

I changed my oil yesterday and filled with Pennzoil UP 0w20 5 quarts and put in a Mopar oil filter. Ive never really paid attention to the oil pressure guage prior. Whats a normal range? At idle when warmed up the psi has fluctuated between 28-29 when in Drive and went to 27 idling in park. When accelerating the psi rises and falls as necessary. I checked the filter cap and no leaks. One thing I noticed yesterday when I hand tightened the filter cap I got resistance before the cap fully seated. Yes, I put the new lubed rubber ring in the correct location. Could I have gotten a crap filter and/or put the filter cap on wrong? All the fluid temps are in operating range and no rough operation.

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[ShadowsPapa]

I changed my oil yesterday and filled with Pennzoil UP 0w20 5 quarts and put in a Mopar oil filter. Ive never really paid attention to the oil pressure guage prior. Whats a normal range? At idle when warmed up the psi has fluctuated between 28-29 when in Drive and went to 27 idling in park. When accelerating the psi rises and falls as necessary. I checked the filter cap and no leaks. One thing I noticed yesterday when I hand tightened the filter cap I got resistance before the cap fully seated. Yes, I put the new lubed rubber ring in the correct location. Could I have gotten a crap filter and/or put the filter cap on wrong? All the fluid temps are in operating range and no rough operation.

Totally normal.
It's regulated to top out at 30 psi below about 3,000 RPM and then changes to high volume mode and higher pressure regulation of ~70 psi

Your oil pressure is normal.
Fill cap has zero to do with anything as far as oil or pressure - it only seals to prevent air getting into the crankcase chamber. That's it. You could leave the filler cap off and have no impact at all on oil pressure or engine operation other than emissions, etc.

Frankly, you only need 10 psi at idle for most engines. These run higher only because of fact so much in the engine relies on the oil - variable valve lift, for example, uses oil to control the lift devices.

In short - you have a normal engine and totally normal oil pressure and no need to even think about it.
Pressure doesn't protect anyway, the oil film does.

I've seen those pressures with both of my JTs over the years - and while towing this weekend, when I pulled up to a stop and the engine idled down, your numbers pretty much matched what mine was doing. Coolant 195-200, oil temperature was about 205 at times, transmission stayed under 200 degrees most of the time, oil pressure at idle in gear was 27-30 depending on temperature and such.

 

[NonHyphenated American]

Totally normal.
It's regulated to top out at 30 psi below about 3,000 RPM and then changes to high volume mode and higher pressure regulation of ~70 psi

Your oil pressure is normal.
Fill cap has zero to do with anything as far as oil or pressure - it only seals to prevent air getting into the crankcase chamber. That's it. You could leave the filler cap off and have no impact at all on oil pressure or engine operation other than emissions, etc.

Frankly, you only need 10 psi at idle for most engines. These run higher only because of fact so much in the engine relies on the oil - variable valve lift, for example, uses oil to control the lift devices.

In short - you have a normal engine and totally normal oil pressure and no need to even think about it.
Pressure doesn't protect anyway, the oil film does.

I've seen those pressures with both of my JTs over the years - and while towing this weekend, when I pulled up to a stop and the engine idled down, your numbers pretty much matched what mine was doing. Coolant 195-200, oil temperature was about 205 at times, transmission stayed under 200 degrees most of the time, oil pressure at idle in gear was 27-30 depending on temperature and such.

Thanks, put my mind at ease. I was driving through town at 35 at about 1600 rpm and psi was 29-30. I maintained speed and I put the auto in manual mode and downshifted gears to bring up the rpms. Hit 3k psi went up and then back to 29 psi when cruising. Im going to be doing my own oil changes from now on and dont want the dealer to have any reason to deny any warranty claim.

 

[Vincent]

I changed my oil yesterday and filled with Pennzoil UP 0w20 5 quarts and put in a Mopar oil filter. Ive never really paid attention to the oil pressure guage prior. Whats a normal range? At idle when warmed up the psi has fluctuated between 28-29 when in Drive and went to 27 idling in park. When accelerating the psi rises and falls as necessary. I checked the filter cap and no leaks. One thing I noticed yesterday when I hand tightened the filter cap I got resistance before the cap fully seated. Yes, I put the new lubed rubber ring in the correct location. Could I have gotten a crap filter and/or put the filter cap on wrong? All the fluid temps are in operating range and no rough operation.

sounds normal to me!

 

[Lunentucker]

Mine runs 31 most of the time at cruising and tops out at 77 when pushed.

 

[ShadowsPapa]

Mine runs 31 most of the time at cruising and tops out at 77 when pushed.

You'd better go see a dealer. It's supposed to be 30 so maybe the regulator spring is out of calibration. They are probably on back order so you'll be waiting a few months.
Better park it, that 1 pound could blow something (like battery, perhaps)
Perhaps it's where you live, higher altitude will mean lower air pressure so the oil can flow more freely.

 

[kevman65]

You'd better go see a dealer. It's supposed to be 30 so maybe the regulator spring is out of calibration. They are probably on back order so you'll be waiting a few months.
Better park it, that 1 pound could blow something (like battery, perhaps)
Perhaps it's where you live, higher altitude will mean lower air pressure so the oil can flow more freely.

Now wait, you have to ask if he's running his summer oil or his winter oil and which direction he's traveling.

Because you know different viscosity and head wind or tail wind can affect the knueter valve settings......

 

[kevman65]

To the OP, next time you change your oil, put foot on brake pedal, put foot on gas pedal all the way to floor, hit your start button for a few counts.

Truck won't start, you'll prime your oil pump and oil system, and if you get the oil pressure screen up before you hit the button, you can see 70+ psi.

 

[Lunentucker]

You'd better go see a dealer. It's supposed to be 30 so maybe the regulator spring is out of calibration. They are probably on back order so you'll be waiting a few months.
Better park it, that 1 pound could blow something (like battery, perhaps)
Perhaps it's where you live, higher altitude will mean lower air pressure so the oil can flow more freely.

It's probably the Low Pressure System in the engine bay created by my awesome hood vents.

The freaking Weather Channel wanted to give it a name the other day.

 

[ShadowsPapa]

It's probably the Low Pressure System in the engine bay created by my awesome hood vents.

The freaking Weather Channel wanted to give it a name the other day.

For the luxury level of Jeep, you can get those in oak.

 

[BearFootSam]

It's probably the Low Pressure System in the engine bay created by my awesome hood vents.

The freaking Weather Channel wanted to give it a name the other day.

Looks like a Grenadier with those sick vents, home depot?

 

[jav_eee]

Ive never really paid attention to the oil pressure guage prior.

I knew this was the case before i even read you post...

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