-=> Quoting Mike Dale to Ken Thompson <=-
 MD> I think the main point that the octane has to do with is clenliness,
 MD> it burns more completely, and the Nitrides of oxygen it leaves behind
 MD> are more easily removed by the catalytic convertor, and are less
 MD> harmfull to the environment.  I'm not too sure as to what would be
 MD> less volatile, but your idea does seem right.  I think though that the
 MD> main thing that causes the improvment in power could be with how much
 MD> the compound expands when burnt...  Maybe it expands more, and also,
 MD> the higher-up gas burns more fully and completely, therefore you get
 MD> the most from the fuel.
          The Federal Trade Commission has obtained consent decrees
against several oil companies, and is pursuing one or two more cases
where the oil company has not yet settled, on the grounds that the
oil companies have *falsely* advertised:
          1. That higher octane is more beneficial or provides more
                power in engines which were designed to run on
                "regular" unleaded gasoline (usually 86 or 87 octane).
          2. That higher octane gasoline is cleaner or provides
                any other benefit in engines that were designed
                to run on lower octane.
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