What do you consider freeway speeds? Here in Ohio the speed limit on most freeways is 70mph. I usually set the cruise at 72-73 so I'm not getting ran over. I average 16-16.5 on the freeway.
My 2002 powerboost crew cab long bed w/ 18k miles gets pretty lousy mileage, all stock. Ford advertises this truck as 23city / 23hwy but I get 16-17.5 city and 16-16.5 highway. I don't hot rod my truck and I stay within a couple mph of the speed limit. My truck is a Lariat, has a fiberglass...