Diesel Mileage

Double post.

Dakota Wagon Master wrote:
Recently purchased a 2006 Tradewinds 60D with the 400 HP Cummins and Alison transmission. I have heard of mileage reports of 8-12 mpg.
What's real?!

Real Life experiences here;
70 mph = 7
65 with the wind maybe 7.3-7.5
60 on cruse control flat 7.8-8.0
55 cruse control and the wind at your back maybe 8.2 - 8.5
Top of Vail Pass to Golden with engine break used sparingly 10 - 12

Those people who say they get 12 in a ISL 400 going down the Highway are just a little Math Challenged.

JMHO,

In all REALITY, if you get ANYTHING over 7, you're lucky. He's right, it's an oversized KLEENEX box on wheels. These things have been improved over the years but, they're still big, still square and, still quite heavy. Good luck.
Scott

Mileage depends on you. If you like 70mph and up. 6mpg. If you drive 55-60, somewhat flat little hilly. 8-10. You are pushing a box down the road. Slow gradual starts.

I suspect 12 is on the high side except for a short leg under ideal conditions. 8 +/- is probably a more realistic trip avg.