The mods and miles in my signature plus when I'm keeping busy I'll add 2,500-4,000 miles per week. I've changed most all of the sensors, turbo, tranny, waterpump, thermostat, flushed the cooling system, glow plug relay, I'm on the second set of brake pads but still the factory rotors that it came with, replaced one rear caliper, the IPR and am working now towards getting all the injectors changed out.
The tuner has been set on 40hp tow forever. It will use between none and 2 quarts between the 5,000 mile oil changes depending on how hard I'm working it and idle time. My Blackstone reports come back great with the exception of iron being just a shade higher than normal.
Gotta love these trucks!