Here you go:
We have a 2005 38J. The following weights were with full fuel and water tanks and loaded for a trip: Lfront-3850, Rfront 3640, Lrear-6960, Rrear-6600, total 22450. We do not have the washing machine option, nor the double door refrig.
Our milage has been about 6.7mpg at at averge speed of 60mph. This was on a trip from Southern California to Montana, taking a lot of grades.
We are quite satisfied with the unit. My wife loves the arrangement, particularly the kitchen. I like where the TV is located across from the couch and lounge chair. It handles just fine. Like any front gas engine motorhome, it gets a little noisy when taking a grade a 4000 rpm. I would like to have less wind noise in the drivers seat, but since we only go about 5000 miles annually, I can put up with it.
Let me know if have any other questions.