Originally Posted by thunder98110
i know for the 4.7 the oil pump is rpm dependent. at idle and low cruising speed its on the lower hash mark. if you got WOT and it doesnt move then you have problems.
should be that way on all engines.
I remember reading on here somewhere, that if you're losing pressure at high-ish RPM, that there are blockages forming. Makes sense.
I'm on lower mark idling, and halfway at highway speed.