 Bought from CarMax at 18k miles  1k miles later they rebuilt the rear gear box to try to get rid of the moaning sound between 40 and 50 miles an hour on deceleration.  Never worked.  At 90k the gear box was rebuilt again because of a constant whir. Let's see, at 70k I got a new front end. Top's starting to leak. Valves tap a lot if you don't keep cleaning the injectors ($$).  Travel 150 miles a day at an average 72 miles an hour.  Time to clean injectors again and probably replace the egr valve.  My 9th Ford and probably my last if Toyota makes a larger truck.