Guy literally just picked it up. Hopefully get compression test results today, and a game plan together. All diesel's have their problems. The only scenarios you typically find online are bad lol. I'm sure a lot of people never have problems. I think with a 6.4 if you get rid of the emission stuff DPF/EGR early enough, it should be as reliable as a 6.0, they are almost the same motor.
They're pretty different. The 6.4 has serious issues with pistons and cam lobes. When a 6.0 breaks, it usually just breaks one part or one subsystem When a 6.4 breaks, more often than not it's totally trashed.