Thanks for the feed back....My first trip was 3,000 miles from nevada to utalh, colorado (11,000 ft passes) new mexico and home. Encountered alot of weather and headwinds. With my trailer loaded and also the pickup I averaged 10.5 mpg and that was starting with 700 miles on the pickup. Plenty of power. My wife drives a particular section going north out of Las Vegas on 95. She couldn't believe that she could just leave the truck on Cruise and never had to shift out of 6th. So far so good.