That's pretty decent mileage there. Do you have exhaust or cai installed? I have a 12 Reg cab with the Hemi and 3.55's as well. McGaughy's 2/4 drop, K&N cai system, and series 10 flowmaster, 93 octane, mds off and last night I was pulling just a tick over 20mpg at 65mph. Other contributing...