Just one question, lookin to get back into a diesel very soon,prob. gonna go with a 2500 4x4 crew cab long bed. What kind of milage can I expect to get with the 6.7 ? And there anything that can be done to these engines to improve milage without voiding warranties? Thanks

 

Well you will see anywhere from 10-14 on average maybe higher depending on how you feather your foot and combination of driving city or highway. That is with all the emissions still installed. Not really major improvments unless you do delete, but does void warranty. I am currently seeing 15 city/18 highway in my crewcab 3500 4X$ with deletes. it was 11-14 before. I am not to worried about waranty due to how well the cummins engine is built and with the deletes done most of the electronics are unhooked except for the fuel system.

 

I'm getting about 15-16 on the highway in my 2011 3500 4x4. I drive about 60-65 these days. It will drop to 13-14 at 75mph. Truck has 600 miles on it.

I bought the 5 yr 100k bumper to bumper so I don't think I will do any deletes.

 

I did the same thing with the bumper to bumper. Figure if it's covered 100% while I'm paying for it, I want it fixed 100%!