I brought back a load of wood with a 20 ft gooseneck from Oklahoma. The wood weighed 12,120 lbs. I was at 23,720 Gross according to the cat scale in Checotah, Oklahoma. I drove between 70-75 on the freeway coming home in a slight headwind and got 12. 2 mpg. The power was just awesome, truck did fine with not having to gear down except in traffic. Don't know about egt's as I am in the process now of getting some gauges. Pulling the 5er this weekend and will see how it does with it.