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'07 Caravan - very poor gas mileage

 
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John61

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Since: Feb 11, 2006
Posts: 12



(Msg. 1) Posted: Sat Dec 29, 2007 11:02 am
Post subject: '07 Caravan - very poor gas mileage
Archived from groups: alt>autos>dodge (more info?)

This summer I bought a new 2007 Caravan base model with Flexfuel. For the
first tank of gas, I got about 18mpg in town, a little below stated mpg.
Then the mileage kept going down. In cold winter now, it only gets 14mpg. I
exactly followed the advice for break-in, and get services on time. This
never happened to our other new cars. I used to own a '94 Caravan, even
better mileage than this one. I know there are some additives to gas in
winter, but that should not cause so much loss to efficiency.

Thanks.

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Dan C

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Since: Nov 26, 2006
Posts: 111



(Msg. 2) Posted: Sat Dec 29, 2007 12:59 pm
Post subject: Re: '07 Caravan - very poor gas mileage [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

On Sat, 29 Dec 2007 11:02:22 -0600, John61 wrote:

> This summer I bought a new 2007 Caravan base model with Flexfuel. For the
> first tank of gas, I got about 18mpg in town, a little below stated mpg.
> Then the mileage kept going down. In cold winter now, it only gets 14mpg. I
> exactly followed the advice for break-in, and get services on time. This
> never happened to our other new cars. I used to own a '94 Caravan, even
> better mileage than this one. I know there are some additives to gas in
> winter, but that should not cause so much loss to efficiency.

Bummer. Have you talked to your dealer about it?

> Thanks.

For what?


--
"Ubuntu" -- an African word, meaning "Slackware is too hard for me".

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Gyzmologist

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Since: Nov 16, 2007
Posts: 16



(Msg. 3) Posted: Tue Jan 01, 2008 5:54 pm
Post subject: Re: '07 Caravan - very poor gas mileage [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

John61 wrote:
> This summer I bought a new 2007 Caravan base model with Flexfuel. For the
> first tank of gas, I got about 18mpg in town, a little below stated mpg.
> Then the mileage kept going down. In cold winter now, it only gets 14mpg. I
> exactly followed the advice for break-in, and get services on time. This
> never happened to our other new cars. I used to own a '94 Caravan, even
> better mileage than this one. I know there are some additives to gas in
> winter, but that should not cause so much loss to efficiency.
>
> Thanks.
>

Could have something to do with the FlexFuel capability, which your '94
Caravan did not have. Fuel blends do not have the energy density (BTUs)
of gasoline, which causes a drop in MPG when they are used. For example,
propane is about 85%, and CNG is about 60%. Don't know about blends like
E85. Based upon your experience I would guess 78% (14/1Cool.

--
Gyz

If a man is speaking in the middle of the forest and there is no woman
around to hear him, is he still wrong?
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