I thought it might be interesting to give real world comparisons.
Here is the first one.
2006 International 9900, 500 HP ISX, 18 speed manual.
2010 step deck with a pump jack loaded. No Tarps.
Weed California to Bakersfiled, 59 mph, constant cruise control, 78,000 lbs
7.9 US MPG.
Post yours when you get it.