Almost 30k, 29959.....I changed the front and rear diff oil myself.? Put valvoline 80 90 synth blend in the front (piece of cake).? Used Mobil 1 75 90 full synth in the back (pita).? Having to syphon the old fluid out was not much fun.? Is it too much to ask for separate drain and fill plugs on a rear diff?? I also noticed my rear diff cover was almost completely rusted and most of the paint has flaked off.? Anyone else notice this on their 07?? I asked the dealer about it and they claimed that it was the result of my driving 2 days in the snow and salt covered roads this past winter.? They also pointed out my driveshaft and various suspension components were completely rusted over, again, blamed it on the salt.? Should I worry?? I also had the same dealer service the transfer case and transmission.? They did a BG flush on the tranny.? I was a bit worried at first, but, man, what an improvement in shifting, it's quiet and smooth again.? Hope it lasts.