My son's 2002 RMK 500 burned up a tank of fuel, 11 gals, in 4 hrs of riding yesterday afternoon. I did not check the milage to se how many miles we went. My RMK 600 used about 3/4 of a tank. He may have been a little more agressive with the throttle than I was. We were doing some up hill stuff, carving and just flat out going fast. Does his consumption seem excessive