octane booster

[James Weiler]

On Tue, 7 Jan 1997 gofast at ix.netcom.com wrote:

> Hi guys. I *think* I am running out of octane in my BMW 530i - I have high 
> compression pistons, and the car is choking at high rpms. Have checked most of 
> the obvious things like fuel pressure, filter, etc.
> 
> I read here that xylene or Toluene is the way to get more octane. How much 
> should one add to each tank?
> 
> What is the minimum octane I would need with 9.5:1 pistons?
> 
> Thanks in advance.
> 

9.5:1 doesn't sound that high at all.  Where are you and do you know if 
the gas in your area is O2 enriched?  Can you still get leaded gas?

Xylene and toluene are good but methyl-t-butyl ether is better and 
probably cheaper.  There are others that are potent but I'd have to look 
them up.  Undergrad chemistry was a while ago.

Where will you get these from?
later
jw