Well I guess I lose, I just squeezed a kewl 20 gallons into my d-2500, thou I did get 225 miles for that, 11.2 mpg which is also October's econ.
There is hope yet, that's better than what I've seen most of the year (10-11), I suspect I'm getting used to the 400hp and that helps considerably. I've started using non-hybrid D-Fas despite a certain electrical problem, it does appear this is what gains the most benefit, I do hope to get at least 12 out of it.
The 325 hasn't had any fuel added, thou it's just below 1/4 so I suspect by next Monday it will need a $20, the gauge is indicating 9.4L / 100klm which isn't so hot, but this is yet another vehicle that gets its best fuel consumption sitting in the driveway