I have a 2wd with 4:10's I am only getting 16 mpg in my daily driving,, mostly city with about 4 miles on the e-way. . Can anyone tell me what type of things I can do to get better mileage. . My truck is bone stock at the moment. . I do have a bug deflector and a tonneau cover on it ... oh yeah, this is traveling with an empty load..... ???? I have considered getting a edge box, but don't want to do that until I have gauges... ...