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Re: Octane Boosters - Methanol & MBTE

   > Another concept I remember reading about is water injection -- cools
   > down the air/fuel mix . . .

   It's more complex than that - water heated to steam through the same
   temperature range that petrol/air goes through in combustion expands
   about three times as much.  The military use water injection quite a
   lot, but then they can afford to trash engines frequently.

Yeah, I kinda remembered that too.

The big question I have is: other than the immediate lowering of the
air/charge temp before ignition, does adding water/vapor/steam affect
the detonation characteristics (i.e., is it in effect an "octane
booster")?

				-RDH