Not proud of this, but I bought my 2006 F250 Crew Cab 2WD PSD new and haven't touched the transmission since. No oil changes, pan drops, filter upgrades. Not even a front filter change. I obviously missed that 30K mile maintenance cycle thing once or twice. But now I'm in the process of upgrading to the new style oil pan and filter. Just thought I'd show what things look like with almost 200K miles and not a bit of maintenance. The transmission has continued to work flawlessly. I really don't see anything to be concerned about, which is really surprising. I certainly gave it enough rope to hang itself. The only reason I think it looks this good is because I got a tune for the truck from Tony Gonyon at Tuners Inc. almost immediatlly after buying it. Like 20 miles it. That tune firmed up the shifts. I wonder if having less slip on the clutches helped the wear. Just a thought. I may cut the old filter apart and see what else may be in there.