You've had better then a week,have you done anything to rectify your oil pressure situation yet?
I posted this yesterday:
U P D A T E > > > > >
Well, the low oil pressure issue seems to be finally fixed, I guess.
I decided that I was going to go back to the factory recommendation for oil and use a Mopar 339 filter....I opted for Pennzoil Platinum 5w20 this time, just to reset everything.
Also, I replaced the oil pressure sensor with a Mopar OEM unit for $38.00.
I changed the sensor while I had drained the oil and installed the new filter. Topped it off with 7 quarts of Pennzoil and fired it up. Immediately the oil pressure went to 55 psi...never saw that before.
Took it for a long drive (10 miles) both city and interstate. Seems that everything has reverted back to what it was when I bought the truck. Oil pressure at warm idle varies between 26 and 28 psi. On the hiway at 70-75 mph, the pressure generally rode at 48 psi, and occasionally dropped to 47, or jumped to 50 based on the terrain...goofy.
Anyway, it's all better than the 39 psi I was getting at 75 mph but not as good as some folks say they get....50+
As I was runni9ng Royal Purple 5w30 and a Royal Purple filter, I do believe the culprit was the pressure sensor. It seems that over time the engine heat interferes with the accuracy of the sensor....the brass nut on the sensor was actually green. Doing some research, it appears that the pressure sensor going bad is not that uncommon, according to the local dealer who was actually out of them and they were on back order.