ksss wrote:
I had a '15 3500 with a 6.0 and 4:10's while I had a '15 3500 Duramax at the same time. The 6.0 was never set up to pull the TH, but it did haul equipment as did the Duramax. Loads were pretty heavy (last scaled weight I remember with the 6.0 was 31K combined). The 6.0 would get 5-6 mpg. The Duramax would get around 9 pulling the same loads. The diesel clearly pulled much better, but I never saw anywhere near the separation some claim between the two.
Your numbers show a 50% increase in fuel economy between the 6.0 and the Duramax. And there really is no comparison in the way the two tow. What are you referring to when you say "I never saw anywhere near the separation some claim between the two"?