You guys are right- Ford Super Dutys with the diesel engine many times require the cab to be removed for major engine work. In fact, the 2008+ trucks are supposed to be designed so that removing the body is even easier than the 05-07 model trucks. As long as it's under warranty, I tend to not care too much what it takes to get the job done; however, when the warranty is up, removing the cab adds complexity (and likely cost) to the overall repair such as removing coolant lines and A/C hoses.
It seems a lot of guys get rid of late model diesels around the 100,000mile mark, which just so happens to be the powertrain warranty!
Speaking of oil dipsticks...
The new F150s no longer have a transmission dipstick. Hows that for "lubed for life?"
1999 Ranger 4.0 Sport --SOLD!--
2009 F250 XLT CrewCab ShortBed
5.4L / 6 Speed / 4.10LS