I have found that when (long trips)fully loaded(minus 1/2 water tank) doing 65 mph on flat land we can get about 8-8.5 mpg. If I feel speedy and do 75 it drops to about 4.75mpg.
We took it slow going over,through and around the big hills in Colorado last year and averaged around 6-7mpg. That's full to the gills for 2 adults and 4 kids plus to big dogs.
We took a weekend trip to Omaha and averaged closer to 9 mpg.
All this time my autoparkbrake was slowly squeezing the driveline brakes but never felt it. Anyway Roger Haag talked me through the fix and it runs smoother now so I expect to stay around the 7-9mpg range.
If you have the P30 chassis send me a PM with your email and I'll send you all the info Roger sent me on your braking system. Also, make sure you look in the files section of the IRV2 website- I uploaded the generator manual, all wiring and plumbing schematics and will soon scan all my chassis manuals and other docs.
Ron
