Water Injection (Was: Re: Wide Ratio O2)

[Zack]

Well, Methanol has an octane rating equivalent that is similar to 
that of toluene, but has a heat of evaporation that is nearly 4x 
higher, and it's also miscible with water, so that might be better 
yet.  I think Methanol-Water mixtures have been used in aviation for 
a pretty long time.

Zack

> What about injecting pure (or diluted??) toluene? As Kevin says, kind of a
> dual octane system.
> 
> High vacuum = low octane
> low vacuum =  High octane  (very high octane?)
> 
> Seems possible, even probable, to me.