[jproell2]

You should be able to get 18. Last weekend I used our crewmax to pull a 12ft. utility trailer to help my sister and brother-in-law to move. I filled up after we were done moving their stuff and checked my mileage and filled up again once I got home (about 85 miles). I did exactly what alreadydead said to do....keep your foot in it a little to pick up speed going downhill and don't give it anymore gas going back uphill. You will lose speed going up, put if you do it right, you will be at the speed you want when you reach the top. I got 18.7mpg this trip. I also kept the transmission in the manual mode and kept the tranny in the highest gear possible. The tranny wants to downshift if you let off the gas going downhill (engine braking--> but causes higher RPM's and more fuel consumption.

Long story short....you should be able to get 18 if you take it easy.