So I'm on my lunch break at work, and was going through a drive thru waiting in line, and I looked at my oil pressure gauge, and it was sitting a hair under 40 psi as it usually does as the engine is warming up. It usually sits at 32psi after its warm. Anyways, I noticed it drop to around 32, then go up and back down. Nothing erratic like if it were a malfunctioning BCM, more steady like if you were to press the gas. But I wasn't, I was idling the whole time. It did it a couple times. Should I be concerned? Maybe I've never witnessed the pressure drop while idling. Most the time I'm moving. Right now it's holding steady at 32 psi idling in the parking lot. Specs are 98 4.0, 215,500 miles. Running new Bosch filter and mobil 1 10w-30. Oil and filter have maybe 800 miles on them.
1998 ZJ Laredo, 4.0L, 2WD, it's boring