Yes new Diesels have new emissions crap on them and they suck. But new engines are putting out way better millage than before. GEARS AND DRIVE RATIOS are the biggest factor next to the loose nut behind the wheel. I have a friend that runs a 2005 6.7 cummins in a 3500 Dually and can average about 21 on the highway.
He also has an open exhaust and a mild program adjustment but all emissions crap is in place.
"If we could somehow bottle the Brittany's energy and spirit, we'd solve most of the world's problems, if not all of them"
"People who drink light "beer" don't like the taste of beer; they just like to pee a lot."
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