I have a 5.7L Hemi and recently purchased a 21' travel trailer that we will be taking cross-country. While towing the trailer home I put the Commander in Tow Mode and kept it around 65mph for highway driving. In doing this I could literally watch the fuel gauge drop and am figuring I am getting somewhere between 6-7mpg, in normal conditions my Commander gets around 14mpg. Does anyone have any advice on methods to improve the fuel economy for towing (always use tow mode)? I certainly want to preserve the life of the transmission but also want to know any tricks to help with fuel mileage. Thank you!