Ok have had the oil pressure gauge problem since I got the truck with 0 miles on it, sometimes it will hit "0" check engine light comes on then it all goes back off. Never let dealer try to fix it. Checked it myself and it had oil pressure. Noticed today when I turn my key to the on position the dash gauge shows that I have oil pressure?? Not certain but I don't see how that is possible if the truck is not running. I know on my 2000 powerstroke it was at "0" for a couple of seconds after the start up then would pop up to normal. Anyone else have a problem with this???