You're right. "Solved" shouldn't have been the word here. (More like...a
good alternative solution.)
Running an Octane Booster isn't a fix for carbon buildup, but
sometimes...it's a cheaper fix for older vehicles than rebuilding/refreshing
the engine.
I used to run Chevron Regular Unleaded in my Dak (when I first purchased it)
and have tried several other brands (BP, Shell, Texaco, and Conoco). I
found that in my case (with all current modifications) that the Chevron
Super Unleaded (93 out here) ran best. Did I try Octane
Boosters...well...of course. Did they work, not really...Atleast not in
this application.
> -----Original Message-----
> From: owner-dakota-truck@buffnet4.buffnet.net
> [mailto:owner-dakota-truck@buffnet4.buffnet.net]On Behalf Of Elmer
> Hanhart
> Sent: Monday, January 25, 1999 11:50 PM
> To: dakota-truck@buffnet.net
> Subject: Re: DML: high octane... a waste in money
>
>
> Bernd D. Ratsch wrote:
> >
> > Changing the timing proves this point. High Octane fuel burns
> slower so you
> > advance the timing (or change the timing curve to something
> more aggressive
> > like the MP Computers). This creates a slower/longer burn time.
> >
> > Let's not forget the people that have older motors. Carbon Buildup =
> > Detonation. Add some Octane Booster and your problem is solved.
>
> I don't know if solved is the correct word. More like covered up.
> Obviously if you have advanced timing, you need higher octane fuel, but
> if you have a "normal" motor, you really shouldn't need Octane booster.
> If your vehicle is supposed to run fine on 87, and 89 doesn't stop the
> pinging, you need to look at something besides octane booster. If you
> are running it on a stock motor you really are making less power than
> you could be if it was in good running order and ran fine on 87. I
> believe this is what is called a band aid fix.
>
> The reason advancing the timing works is that it sparks the fuel off a
> little before it was designed to. Running high octane not only keeps it
> from blowing up instantly, but allows it to burn longer, since it has a
> little more time to burn before the exhaust valve opens. Result is more
> power. Running high octane w/ normal timing means you are running the
> chance of allowing the fuel to burn too long/slow. Instead of the power
> forcing the piston down, part of it is escaping through the exhaust
> valve. Result: less power than could have been attained w/ a lower
> octane/faster burning gas. You also run the risk of adding unesecary
> carbon build-up in the combustion chamber since all of the fuel may not
> be getting burned. Guess what? This will require you to use high octane
> gas because of the glowing red carbon pre-igniting the fuel. Wow, maybe
> thats why some people who run high grade gas needlessly find that they
> can't go back to regular gas. Maybe they should just go get some octane
> boost to solve that problem! :) Anyone else?
>
> Erich
>
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