Originally Posted by ardakota
I would love to have one of those titans with the cummins the only thing about any new diesel is at about 100k miles certain emisisons components will require replacement or servicing and those parts are expensive especially the dpf it it cant be cleaned some like on the fords cant be and that part is a around $4k. As far as repair your not going to have a problem getting it worked on cummins can take care of the engine and parts should be widely available for many years.
I bought a Chevy Silverado 3500 Duramax last year. 113k miles on it. Previous owner had the DEF tank and injector replaces under Chevy extended warranty. I had a NoX sensor replaced. Otherwise emissions components are fine. It regens automatically when the DPF filter reaches 40grams of soot.
I would agree with this post reply if the prev owner was not letting the regen complete (was shutting the engine off frequently when the engine was trying to regen to burn off the DPF).
Otherwise I wouldnít think twice about buying a diesel with 100k miles on it unless it was a 6.4l Ford (time bomb).