Advice at 1 Million Miles

[Nilao]

A gallon of oil in 5k miles...start saving for the rebuild as it will need it soon. All that oil going to the dpf will plug it faster and faster.

Oil analysis at speedco is crap. Get you a blackstone labs kit if you really want to know whats in your oil.

Most of us wouldn't trust most mechanics to adjust the valves on our lawnmower much less the engine. Mine was done by cummins when i purchased my truck (used) and when i got it to rawze he found one of my exhaust rockers were riding the cam with 0 clearance and the preload on my injectors was way off.