I noticed today that while i was drivin my oil pressure is reading just at the notch below 80. i know its not normal. but last time i changed my oil i broke the oil pressure sending unit and had to replace it. maybe my guage is just messed up? btw- i put just straight 30w in it this time.

 

It is almost assuredly the oil pressure sending unit. Where did you get your last one from?

I'd recommend replacing it with one purchased directly from Jeep. I have had mixed (poor) luck with aftermarket oil pressure sending units.

The OEM one is the best one for reliability/accuracy/mating with your factory gauge. Worth the extra $20 bucks.

 

yeah i just got it from advanced. i didn't really have time to be picky. i had to be at work :/

 

Buy or rent a mechanical oil gauge, check the pressure to make sure its correct. Replace oil sender if necessary.
Napa, carquest should have oem quality senders.