Commonly today, our grooming customers require extended travels due to large trail systems. Running low on fuel is not an option or a subject taken lightly. Our late Model 2000 standard equipment offers 120 gallons of fuel and 29.5 gallons of diesel exhaust fluid (DEF). The average “working” fuel consumption on a late model Cummins 6.7 210HP Stage V is 4 gallons per hour with a maximum DEF consumption of 10% of the fuel consumption. For every 100 gallons of fuel, one would expect to see a maximum of 10 gallons of DEF consumed.