"Matt Barrow" wrote in message
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"soxinbox" wrote in message
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If you run your car engine on 80 octane mogas, it will usually run fine.
If your car overheats, it will start to knock. If you have 100 octane gas
it will start to knock at a higher CHT than if you ran at 80 octane. This
is not usually a problem in a car that has a radiator and thermostat to
regulate the temperature.

I can't remember seeing anything less than 85 octane car gas since, oh,
maybe the 60's?


Around here the grades on the pump are 83,89 and 93. Here=South & Central
Arkansas.