I do that for the engine oil. Remove motor from car, drain oil and replace filter, add more oil and then put motor back in car.
I called my dealer 4 months ago about that recall, said they would call me when parts were in. So far crickets!Greg
they will usually say remove/reinstall the ptu if there is no drain plug. IF you were to do this, there are plenty of bulletins from Ford to show how much time that would take. typical is 5 hours.talk with the transmission guy directly, they are better with such things than service advisors. OR find a Lincoln dealership, they are much more used to servicing the "differentials".