I usually post on the 5thGenRams forum, thus my lack of credentials on this one. I have a '19 Longhorn crew, etorque 5.7, off-road, AIR SUSPENSION, Ramboxes, 3.21, 33-gal, MSRP $70k. Gas mileage: overall 15.4 to date. I did a highway test on a nearly flat stretch of 50 miles here in Virginia...