temp-mpg relationship

[Robert Myers]

Has your fuel company changed its fuel blend from their low pollution but 
less powerful winter mixture to the more powerful summer mixture?

At 10:42 AM 4/4/01 -0400, Mullen, Shaun wrote:

>At the risk of starting a Thread From Hell, would any of our more
>tech-oriented listers like to take a whack at why, as temperatures rise in
>the late winter into the early spring (in the Northeast U.S., in this case),
>gas mileage improves?  I was averaging 20.1 mpg in February.  I was
>averaging 21 mpg in March.  Now I'm nipping at the 22 mpg mark.  Type of
>driving and type of fuel are not factors: I have not altered my driving
>routine -- about 75 percent highway and about 25 percent city.  I have not
>altered the kinds or octane of the fuel I use.
>
>Shaun Mullen
>Gasoline Alley, USA
>
>
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Bob
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