aggiegrad05
Full Access Members
I got 450 out of a tank on a road trip this weekend. Keep in mind I have the larger 28 gallon tank as it's a Max.Coming from a 2007 Denali XL (3.42 FDR) with full time AWD and 6 speed AT , my highway average at 75 was 16, if I can get 21, that is a 31% improvement. Around town in the winter had to baby it to get perhaps 12. In recent years Denali went with selectable transfer case to help. MPG is not the concern for me, but more so range. My acid test is 500 miles + highway between gas stops