read this.... if you're interested in this thread WAS:Re: fleecing of automobile owners

["Mark Madison" <markie@proaxis.com>]

http://www.landfield.com/faqs/autos/gasoline-faq/part1/

lots of good info on gasoline.

Mark M.

85 8v Scirocco
85 8v Golf GTI






----- Original Message -----
From: Roland Johansson <scirocco@mail.bip.net>
To: Scirocco mailinglista <scirocco-L@scirocco.org>; Mike <lerb@redrose.net>
Sent: Sunday, May 02, 1999 10:28 AM
Subject: SV: fleecing of automobile owners


>
>
> <Anyone have any problems with low octane? Does anyone really
> know what octane <is?
>
> I know what octane is, it's a definition of the gas explosion
> grade.
>
> <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.
>
> Octane is nothing in the gas, it's a number telling how easily
> and fast gasoline burns. You actually has two octane readings,
> RON and MON, I don't remember which one is which but one is how
> easily the gas explodes and the other how fast the gasoline
> burns. If you with a formula put RON and MON together you get
> the pump "octane grade".
>
> <Therefore when you use higher octane you get less explosion
> resulting in less burn <and as a result you get less HP not
> more.
>
> This is right but if you have a high compression motor or
> overcharged your motor will ping. The motor is making most power
> when it's pinging sligthly but it will kill damage/kill your
> pistons depending on compression ratio and/or boost. A given
> amount of low octane gas has more energy stored in it than the
> same amount of high octane gas but if you increase compression
> ratio and advance timing you get more power earlier in power
> band and you can get more power to the wheels on the same amount
> of gas.
>
>
> <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!
>
> Reading the above and doing a simple conclusion, if you get more
> power earlier in power band you can change gear at lower RPM for
> the same acceleration, this will save gas in most motors. On
> some motors you have an electronic ignition with knock sensor,
> this will retard your timing if it "hears" pinging or sometimes
> for other mechanical noices, this will give you less power in
> motor.
>
>
> Roland Johansson
> Scirocco 1,6l TIC -82
> Http://hem.passagen.se/toker
>
>
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>
>


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