Re: [non-rocco] high octane (mix your own?)

[John Lagnese <jlagnese@cybertours.com>]

Hi,
I think that he meant that it is a waste of money to buy excessively high octane.
If there is no pre-detonation there is no real benefit to a higher octane gas.
Octane rating is based on not igniting. Low octane gas 'pings' because compression
and heat ignite it. High octane gas is harder to ignite. This is why it can work
in high compression engines.
John

Brad Sterling wrote:

> Someone once told me that you can overdo it with octane.  That was the
> extent of
> his comment.  I was too young and stupid then to think to ask what he
> meant.
> Anyone?!?
>
> -Brad
> older and just as stupid
>
> Bradley Peet wrote:
>
> > I have some information on mixing your own octane boost, if you're
> > interested.  The gist of it is that you can buy the same chemicals at a
> > paint store (Xylene and Toulene at approx $3/gal) for a whole lot less than
> > you pay at the auto parts store for a little 16 oz bottle of octane boost.
> >
> > http://effervescent.com/vw/fuel.txt
> >
> > An important point to keep in mind: you must mix in 10% of this octane boost
> > to raise 92 octane premium to 94.5 octane.  So if 94 octane fuel is
> > available at the pump, buy it.  Likewise, if you really need 100 octane
> > fuel, you're still better off buying it at the pump.  (I'd be hesitant to
> > mix 30% of ANYTHING with my gas for fear of harming the fuel system and/or
> > engine.)
> >
> > -Bradley
> > 86 S16V 2.0l (turbo almost done)
> >
> > >Date: Tue, 7 Sep 1999 13:34:01 -0700 (PDT)
> > >From: Mark Peele <type53@yahoo.com>
> > >Subject: [non-rocco] high octane
> > >
> > >There's a Sunoco down the street from my new house that sells 100
> > >octane "racing gas".
> > >Will I abandon my plans for knock sensors on my 1981 and 1982
> > >Sciroccos?
> > >NO! This gas is a cool $2.9999 per gallon (cheap for you euro listers!)
> >
> > --
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>
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