[s-cars] Toluene/Gasoline mix ratio

[Charlie Smith]

Earlier, nard1 at cablespeed.com wrote:
> 
> I spent 20 minutes in the archives and did not find.
> Some time ago there was discussion about using toluene to up the octane of
> gasoline.

Here's an info writeup about it, with lots of details, including
formula for figuring the octane of the resulting mixture:

    http://www.elektro.com/~audi/toluene/


> I went to the local ACE and they ordered me a 5 gallon pail for $25.
> What is the preferred ratio? Or is it a trial? I'm thinking to try somewhere
> in the 98 range?

You only need an octane level that's "required" by your engine.
That means high enough that your ECU isn't backing anything off
under full load, worst case.  

More octane that that is of no measurable benefit.  Of course,
more octane would let you run more boost if you had a way of
adjusting the boost upward.

    - Charlie


  Charlie Smith  charlie {at} elektro.cmhnet.org  614-471-1418  
  http://www.elektro.com/~charlie          Columbus Ohio   USA
  http://www.elektro.com/~audi         photos & technical info

  95 S6 Quattro  -  24 PSI, RS2 6 speed, and other features  
  97 Dodge Ram   -  40 PSI, 4x4 w/Cummins turbo diesel
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