01-09-2017, 07:11 PM
Sounds like everything is about the same. I suspect the new DEF engines are actually getting a bit better mileage, but you pay for it on the other end. I like my current 500 Cummins a lot, but I really like the series 60 Detroits also. Personally I think they are a better engine than the C-15, but just my opinion.