Unless the injectors , injection pump ,or lift pump fail, and they costs thousands to fix at least the first two do, I worked on Diesels for 40 plus years, nothing has the torque like a diesel, but once the warranty is out you better have some $$ set aside for repairs!!
This is true,,,, same with the Allison, I imagine,,, the 5.7 probably is pretty expensive to work on also,,,, did you only work on diesels? I need front u joints on mine right now,,,, there going,,,,