What is everyone seeing as far a fuel economy goes with the new 6.7's? I've had mine about 3 months and took my first road trip this past week. I typically average about 16.5mpg. Recently it had dropped to around 15.5mpg. Not sure if it was weather related with cooler temps or what. On the road trip, the cruise was set most of the time and I seen around 16mpg at 73-75mph. I tried lowering the speed to 68 and was surprised to see it raise to the mid 17's. How about anyone else?