real world fuel mileage

I drive a 2000 Winnebago Minnie Winnie V-10 and get from 8-11 MPG depending on conditions such as into the wind, flat land, hills, etc. I pull a 2008 Nissan Versa and don't notice much difference in MPG. When it's hot I also run the generator and A/C and there might be a little difference. Nothing to speak of. When everything works, what a way to travel. I'm not going to worry about pennies.

did a test once on super slab I95 gate to gate no town drv 9,when u figure in avg s slab, town , stop & go between 7-8 no toad
98 v 10 14 k weight 30'