Well, as I mentioned my driving habits are no different now than they
are in summer, and I should have also said I don't have any ice or snow
to deal with, at least not this early in the season. I get my gas at
Chevron and it's normally 10% ethanol year-round, but I'm going to fill
the tank with 100% petrol next time, to see what diff it makes.

--
Jack "Rocket j Squirrel" Elliott
1984 Westfalia, auto trans,
Bend, Ore.

On 11/30/2012 09:21 AM, mcneely4@cox.net wrote:
> Mr. Squirrel, I find it to be true of all my vehicles.  I believe
> that one reason has to do with the consequences of driving on ice and
> snow, which means more variable speed.  I also believe that fuel
> formulation changes for different temperatures make a difference.
> The slight difference in fuel density should mean better winter
> mileage, but I guess the other factors obviate that.  For my Prius,
> that vehicle runs the engine more to keep everything warmed to the
> temperature the vehicle's brain prefers.  But that doesn't apply to
> the Vanagon of course.  mcneely
>