2 or 3 weeks ago I called it a season and swapped winter tires Generals Alitmax Arctic (licensed Gislaved Nordfrost) with all-season BFGoodrich Advantage T/A, which still had 3 mm (1/8″) of thread left before tires call for a replacement. AWD was working in this winter, car plowed really well. Angle gear had signs of removal, I bet collar sleeve was replaced. Both were clean, apparently recently changed. I did stage 0 and, among other things, replaced AOC filter and oil. Other info on the car: when I bought it in November 2012, it had 80k miles on the clock, dealer serviced.

Pulled the DEM plugs, blown with compressed air.