Hello everyone. My dad has 96 ram 2wd with a 5.2L and about 115K on the clock. Yesterday I drove his truck about 100 miles and noticed his oil pressure was slighty below 40 (I can only estimate but maybe 30-35?) on the Highway at 75 MPH (1900 rpm). I have a 95 with over twice the miles on it and have NEVER seen it below 40psi even at idle. I would be interseted in what other people on this forum get for oil pressure at idle and at 75mph. Below 40 on the highway dosen't seem right to me. For the record his truck was full of oil and had only about 500mi since his last change and the motor was clean inside when I did his plentum about 3 months ago so I don't think it is sludge.