It's been a while since I serviced the Jeep, and I considered paying a garage to do it, but finally bucked up and did it myself. Both ends up on jack stands, front wheels off, and then 41 grease fittings and seven gear oil cases while rolling around on the creeper wound up being a half day job. And I found out I need to repair the rear differential cover. The plug has been in and out so many times that the threads in the cover are stretched so that I think the plug could be threaded through and drop in. I'll pull; the cover and weld half of a 3/4" pipe coupler in. Always something.