Re: 91 Grand Wagoneer Oil Change =s high oil pressure, why?
 

I have a 90 Grandwagoneer and I am experiencing the same situation. I just checked the oil, found it a qt. low and added oil. ever since then it has been 80 lbs. at start and running at speed and 40 lbs idling. It used to be 40lbs running and 10 lbs idling. It also seems to be dripping oil more.