Oil pressure questions

[TurboedMJ]

I've noticed while driving my truck that it runs 60-80 lbs of oil pressure on a regular basis. Oil pressure averages about 70lbs. Any particular reason why this would happening? Also, I am about to do an oil change, what do y'all recommend? Truck description is in the signature. Has about 160k miles.

[TurboedMJ]

This is a pic of the oil pressure gauge after about 5 min idling

[Minuit]

Have you connected a mechanical gauge in place of the oil pressure sensor (near the oil filter) and confirmed the gauge readings?

[TurboedMJ]

Not yet, I'll do that tomorrow 

[AZJeff]

For some mysterious reason, the senders on the MJ/XJ vehicles with actual oil pressure guages are kinda flakey, and don't seem to be very robust.   There are countless stories of guys confirming pressure via a mechanical guage and finding it was actually within normal spec. 

 

Once the sender was replaced, all became well again.

 

I am not saying your issue is "for certain" the sender, but starting with a mechanical guage confirmation is always a good first step.

[Minuit]

...and ideally it'll be a Mopar sender you replace it with, if you can still find them these days.

[cruiser54]

Ya know, knowing the info in the attached chart might help us to find an alternative sender: