My son and I just got back from a couple of days at deer camp which allowed me to tow with the '13 F350 DRW 6.7 for the first time. I went the same route two weeks ago with my '10 F350 DRW 6.4L. I got a good comparison between the two on the TT toyhauler. The jury is still out on the nearly 16k 5er, but that day is fast approaching. First off, the mileage was 2.3 mpg better with the 6.7 on the same route, with the same equipment in the camper. The TT TH only weighs 6700 empty, but is full of water(102 gallons), the four wheeler and two huge full coolers so my guess is she weighs around 8600 pounds on this trip. Second thought was that the 6.7 drives like a luxury car instead of a truck. The steering is much more 'nimble' for the lack of a better term. The power steering unit feels much more 'free' than the 6.4. Third thought is POWER. Not just power, but effortless power. I thought the 6.4 pulled things well, but nothing like this. Easy acceleration under any conditions, dead stop, uphill, passing, whatever. Also, I have to watch the speed limit constantly as I can't judge it in this truck yet. I am running 65 without needing to be running that fast. This thing is an absolute dream to drive!! I was very pleased with the trip except for one thing. I have a high pitched whine, almost whistle when accelerating in the gears 1 through 4. It almost sounds like a turbo boot with a pin hole in it, but my sons also points out that is could be the tranny..Will keep an eye on it for sure! Anyway, I LOVE THIS TRUCK! Although I now only have 950 miles on her. I really didn't think there would be that much difference, but boy was I wrong.
