Chevrolet Based Class C *UPDATED AGAIN*

JTCHess wrote:
Double diget mileage with a 6.0 Chevy? Wow, 18,000 miles on my 2008 31C Outlook and the best ever has been 8.3 mpg. Don't get me wrong I really like the Chevy, but I based my purchase on the research from these forums and fully expected 11 - 12 mpgs...

I don't have a computer to tell me my miles per gallon. I keep a log book record of the date, odometer reading, and gallons to fill the tank on every fill. I transfer that information to a Microsoft Excel spreadsheet that has a forumula to calculate individual tank fills MPG and a running overall MPG. I find this information beneficial to point out problems waiting to happen. My spreadsheet shows MPG as high as 17.8 and as low as 8.8. The overall MPG over 41,000 miles is 12.1 MPG. The high was going downhill in elevation for 500 miles with a tail wind. The low was going upward in elevation against a head wind. My unit is called a B+, but what it does have over a typical Class C is a narrower front zone and a streamlined front cab-over.