Community Alumni
Nov 30, 2018I'm running straight 87 in mine even when towing. I ran 89 while towing in the 100° heat and I didn't find a difference in pulling power. All the power was still there. But then again, I'm not all that heavy. Maybe if I was near max and towing in the heat then I would see a difference.
Empty I'm getting around 17 MPG on straight highway tanks. Mixed driving I normally end up somewhere around 15.6 MPG. Towing is typical and somewhere in the 9's for me. Best I've done was 10.3 and the worst was 6.5.