On Jul 29, 7:13=A0am, "Elmo P. Shagnasty" <el...@[EMAIL PROTECTED]
>
wrote:
> In article <488ef841$0$4014$bbae4...@[EMAIL PROTECTED]
>,
> =A0Fat Moe <Fat...@[EMAIL PROTECTED]
> wrote:
>
> > As far as getting extra mileage with
> > higher octane? =A0I don't buy it,
>
> Octane is not the issue. =A0Cleanliness of the fuel injectors and intake
> valves and combustion chambers is the issue.
>
> Get 'em clean first--either by adding an off the shelf cleaner like
> Techron, or by using Shell's or BP's highest octane fuels. =A0It's not
th=
e
> octane that you're looking for, it's the EXTRA cleaners that they charge
> for by putting them ONLY inside their highest octane fuels.
>
> Your choice.
>
> Once clean, keep everything clean--by using a Top Tier gas. =A0Any
octane
> rating.
>
> THEN you'll find that your fuel cost per mile is lower by using a Top
> Tier gas than by using grocery store gas, for example.
>
> Don't calculate mileage, calculate the true fuel cost of driving a mile.
=
=A0
> Gasoline from a Top Tier vendor such as Shell may be a bit more
> expensive to buy, but I found that in the end it costs less per mile to
> use.
>
> You can buy on price, or you can buy on value. =A0If you buy on price,
> you'll probably spend more per mile to fuel your car.
I think you hit the nail on the head, Elmo, at least on certain types
of cars.
I've had my 98 Pontiac Grand Prix GTP for a little over ten years now,
and follow the gas mileage carefully. Using 92 octane, I will get a
full mile per gallon better than using mid-grade. Using 87 octane will
cost me 3-4 mpg, so it costs me a LOT more by using the cheaper
gasoline. The difference in acceleration is very noticeable as well.
Of course, with the 3.8 supercharged engine, the owners manual states
that premium unleaded is required, and I can see why.
Based on these experiences I would not even consider running anything
other than premium in my Trans Am.
I am curious as to what, if any, difference that running premium in my
06 GP (3.8 not supercharged) would make. I have only used 87 octane
since I bought it two years ago.
Even with gas prices as high as they are, I am tempted to try a couple
of tankfulls to see if it makes a difference.
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