Yeah, but for 2013 all Ram 6.7s have DEF so that video is just a poor selling point. I have a 2011 Ram 6.7 and yes the fuel mileage isn't where I would like it, but then again I didn't buy this rig for stellar fuel mileage. I bought it to haul my slide in camper and tow, period. With the auto and 4.10 gearing I manage 10.5 to 11.5 mpg with a 5,000 pound brick sitting on the back. No worse and maybe a bit better than my 2001 Ram 5.9 Cummins with 3.54 gearing.
The Ford is a good truck and I used to be a Ford man, but the Cummins is just better. The Ford and Cheby are faster in the 0-60 tests and 1/4 mile, but I didn't buy this truck for racing. The Cummins purrs under load and just goes and goes just like a big rig, oh, Cummins makes many of the engines in those too.
The Cummins is a medium duty engine, it's more robust, less moving parts, parts that can be bought from the dealership or from Cummins. If your truck breaks down and out of warranty Cummins can work on that engine.
The Ford 6.7 is awesome too, just that many simple repairs to the engine require the cab to be lifted on the pickup. That's ok while under warranty, but when your warranty is done and you have to pay then???? Ford builds that engine and therefore the dealer is probably the only one that will work on that engine.
I'll take a drop in fuel economy at least prior to 2013 models for the better engine.
