Re: fleecing of automobile owners

["Wm. Josiah Erikson" <wje97@hamp.hampshire.edu>]

Mike,
    If you could forward the official published results of this study to me, I
would be very interested to read it.
    Thank you,
    -Josiah
    '84 GTI
    '87 QSW
    http://bork.hampshire.edu

Mike wrote:

> That was the whole answer that we came up with in the three month
> study...run as low octane as you can without any ping. Other than that its a
> waste. unless you have done mods to your car it will run fine on 87 and its
> bull if you believe otherwise. Anyone who says you will lose HP with 87 if
> you are not pinging has been fooled into believing this fake lye. I have
> seen dyno figures with cars that actually ping like crazy. We had a dodge
> diplomat in a ford asset garage dyno and it actually had 30 more HP when it
> pinged to the point it barely ran. But now would I run it like tho NO
> because it is not good on the car. But Hp was lost on every car even when we
> added .5% octane. Not just one car ALL cars lost by then. My 8v did less
> with about 91 octane than it did at 87. My 16V did the best at 76% octane.
> Unless you have upped your compression to the point you ping run as low as
> you can.. We did a study on 50 cars started from 50 octane all the way up to
> 110 on some. And the results were that ever car had more HP at 87.
>
> ----- Original Message -----
> From: Wm. Josiah Erikson <wje97@hamp.hampshire.edu>
> To: Mike <lerb@redrose.net>
> Cc: <scirocco-l@scirocco.org>
> Sent: Monday, May 03, 1999 11:01 PM
> Subject: Re: fleecing of automobile owners
>
> > But you're missing the point. I always run the lowest octane possible...
> > in that I agree with you. But the reason that some vehicles need higher
> > octane is that they have high compression ratios. Therefore, if they
> > didn't use high octane, the gasoline would ignite under pressure before
> > the spark plug ignited it, particularly under full throttle. This is
> > what we call "pinging". It causes valve and various other damage, and is
> > generally bad (robs power). The fact that higher octane gases "burn
> > slower" is what makes it possible to run them in higher compression
> > motors. You're right that the claim about higher gas mileage or better
> > power is crap. I always think it's funny when I see people putting 93 in
> > their Oldsmobile Cutlass Supremes, etc. They're wasting their money.
> > However, VW motors with knock sensors will back off the ignition timing
> > if they sense preignition knock (pinging), robbing power. Putting higher
> > octane in these cars allows the computers to advance the timing more,
> > giving more power. I'm sure there are plenty of other motors out there
> > that do this as well. In those cars, (and it's not most cars), it's true
> > that higher octane will give you more power, to a certain point, beyond
> > which you will again be just wasting your money (I would guess that 89
> > or 91 would be plenty for Scirocco 16v's and the 10:1 8v's)
> >     Later,
> >     Josiah
> >     '84 GTI
> >     '87 QSW
> >     http://bork.hampshire.edu
> >
> > Mike wrote:
> >
> > > Anyone have any problems with low octane? Does anyone really know what
> > > octane is?  I did a exhausted study on content and quality of gas. You
> > > are probably going to be blown away by what I have found! Octane is
> > > shit!!! Octane is nothing more than an inhibitor to keep gas from
> > > exploding as violently and straight gas. Therefore when you use higher
> > > octane you get less explosion resulting in less burn and as a result
> > > you get less HP not more. Now in the past one good reason to run high
> > > octane (if you did not ping with low of course) is they always had
> > > cleaning additives in the high test nowadays some companies (mobile
> > > for one) have it in all grades. Now if you think about this concept
> > > you can thats why they brag that high octane might give you minimal
> > > better gas mileage,because it actually burns longer. Just some FYI to
> > > same ya some money. If you can rub low JUST DO IT!
> >
> >
>
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