my new 02 with 1400 miles started missing a little at idle and if reved to 1200 rpm in neutral. Going down the road it will surge. This morning it has oil all under dripped off truck in several puddles under truck. Under the truck is all covered. I know it is motor oil for sure. Seems like the oil pressure is low, on cold start it is only at 60psi at idle, pretty sure it used to peg the neddle. Changed the oil at 800 miles, filter is not leaking and plug is not leaking. Is there anyone who has had this happen and what is it.