Oil pressure gauge barely moves away from 40psi
This is a short and simple question that I can't seem to find an answer to anywhere on this forum or Google. No matter what the temp is (ambiant or internal engine), what the RPMs are, what the engine load is, the oil PSI never moves farther than about 35 to 45psi and generally just sits a hair under 40psi no matter what once everything is warm. When I first entered the Jeep world by buying this Jeep (which I love to death ) I always thought it was normal till I got a Haynes manual and flipping through it I noticed it said 13psi idle and then 37 to 75psi above 1600rpms. And a friend of mine that owns a Grand Cherokee (whatever the next generation is) with an inline six his oil gauge moves from 20 to 70 depending on RPMs so I was wondering is this normal or does the sensor need to be replaced? The engine is silent other than on 20F and colder days it will click/clack very quietly (have to stand right next to the hood to hear it) for the first few minutes in the morning of idling with 10W30.