So I'm new here and was just doing some searching about my oil pressure gauge. I've had the truck for about 3-4 months. When I first got it(2004 SE I believe) It seemed to move around based on throttle. Right now it goes up to just over the middle and really stays there even under higher throttle. I had the oil changed and it still seems the same but this morning when it was cold it moved up a little but after warming up stayed just above middle again. when at idle it drops down to just above quarter pressure. Any thoughts? Maybe the pressure sending unit?