When I pulled the prop shaft the other day I saw a bunch of oil under the truck. Not on the ground but all over the underside of the front of the truck. Tried to track it down but without actually cleaning it first, next to impossible. Seems to have started very recently because I check the fluids on a regular basis and just had to add almost a whole quart the other day. The oil seems to have started leaking from the adapter where the oil filter lines leave the block. Checked the books that I have and there is a gasket in there between block and adapter. At least that is where I think the oil is coming from. I would say oil pan or seal but the adapter is higher than those. Anybody have similar findings? Jim