Changed the lube in the rear axle today. Gen 2's have a drain plug in the diff cover so they're easy. Best to remove the spare tire first so you can snake the fill hose through a hole in the crossmember. 3/8'' ratchet with no extension for the fill and drain plugs. In the last pic you can barely see the small wastebasket I put the lube bottle in so they don't tip over. I changed the rear axle and transfer case lube every 30k from new until I hit 150k and they both drained out pretty clean so I waited until almost 50k this time and you can see it still looks pretty clean. The drain and fill plugs have a magnet on the back side to pull out metal shavings so wipe it off with a cloth before you put them back in. Takes two quarts of 75w-140 synthetic, I used Valvoline Synpower. The pump is $8 at Harbor Freight.