whistlepig
Elite Member
My B7800 uses a little less than a gallon an hour finish mowing or brush hogging. About half that for most other stuff. It has a 7 gallon tank. Your tractor should use a bit less fuel than the B7800. I would say your 6.6 gallon tank should do 8 hours of mowing. Mowing at PTO speed uses the most fuel. Other stuff at low RPM's uses much less fuel. Half as much or less.