Dave:

I have looked for a good reason not to run premium gasoline, but I can't
seem to find any detailed information. I have always gone by the sticker on
my van that states something about a minimum octane rating of 91. Based on
your post I did manage to find a website with an excellent database of gas
stations selling ethanol free gasoline (http://pure-gas.org/). Can you
expand on the reasons why my van will be/run/last better with a lower octane
gasoline? The manual I have for my '91 Multivan specifically states that
ethanol is a no-no, but I assumed that I couldn't buy anything but blended
gas in WA.

Thanks,

DW

On Thu, Mar 10, 2011 at 8:32 AM, Dave Mcneely <mcneely4@cox.net> wrote:

> ---- PB <pbrattan@GMAIL.COM> wrote:
> > Nothing's wrong with my Westy, but would like to know if STP gas
> > treatment will increase mileage and enhance performance.
> > Patti
> > 90 Westy Automatic
>
> no.  the best fuel for your vehicle is regular, unleaded, gasoline, without
> alcohol if you can get it.  STP (or any other in tank gas treatment) is for
> the most part just expensive (very expensive) fuel.
>
> mcneely
>