My last two measured trips on open road, with one stop each way for food/rest, and 5-15 miles on each end of city traffic, netted no more than 16.5 MPG, per tank. Each tank had only about 208-216 miles on it, with gauge showing slightly above to midway between 1/4 and 1/2 tank available. My in-town mileage has dropped to low 12's to upper 13's, with no agressive driving on my part.. ?Would like to hear some others inputs.My 5.7L 08 only has about 2800 miles on it right now. Long-Bed, Club Cab 4x4.......