I have a 2007 with the triton v10 35' class A getting about 7mpg to. Like you I have a friend with a 35' class A dutchstar with v10 getting about 8.5 mpg? I drive about 60, try to not let rig down shift to offen,stay away from hills,use open road as offen as I can etc. Maybe someone can help us Gary
bobnliz