'05, 4.0L flex fuel and just started leaking from what I would think is the pinion seal in the front differential. The fluid is definitely thick like a 90w would be, and it is coming from the rear of the pumpkin in front of where the driveshaft connects. There is something like a collar there. I've searched this forum looking for any info on how to do this myself. I don't have a lift, but I have a garage with floor jacks and air tools, etc. So far, all I think I know is that I need to drain the fluid, disconnect the driveshaft, remove that collar somehow, mark the bolt/nut? with a punch, remove it, remove the seal, replace the seal, use an air tool to drive the nut/bolt to just barely past the origional mark, put the collar back on, reconnect the driveshaft and fill with proper fluid. Any help filling in the gaps would be appreciated. Thanks.