Just took ownership of 2019 1500 4wd, HEMI. Mileage sucks. BEST I’ve gotten was 14. I drive 160-200 miles a day (city and state routes). I keep my foot out of it, but can’t seem to get anything close to epa advertised mileage. On 8 tanks, my average is 12.9!!! I do NOT use the computer!! I fill COMPLETELY up, and use actual mileage. Currently 2,200 on the odometer. ANY SUGGESTIONS?? I do not have auto stop/start feature