I drove Ford company trucks for over thirty years, starting with in line sixes and ending up with a couple of 7.5 Diesels.
Even owned a couple myself.
Damn fine trucks and I loved the 7.5. The last one had 245K on it when I turned it in and was running as good as new.
If Ford had not discontinued the 7.5 at the time I got ready to retire I would be driving one now, but they went to the crappy 6.9 (not my words, those are from a dealer service tech)
I'm driving a '06 Dodge 2500 Cummins, six speed manual trans, with currently 91K, I use it mostly as a hunt/haul rig so not a lot of miles.
It's as good any truck I ever drove.

BTW, my car? It's a Ford.