X15 questions

[Ben50291]

I have a 2021 389 x15 565hp stock. I run tanker in Midwest. 80,000 loaded half the time and 27000 empty. It's mostly flat ground but we get wind. I'm at 60,000 miles and I'm conservative on the fuel still practice hyper miling. I usually am around 6.8 with calculator. I've definitely been in the 5s and in July my month average was 7.2. You really have to be patient and try hard to the mileage but it can happen.