> >The lowest octane gas I've ever seen is 87
> When driving across the country, I noticed that most of Wyoming was the same
> way until we got out of the mountains. Does anyone know if they adjust the
> octane value for altitude? It would seem to explain it.
Octane requirements are directly proportional to atmospheric pressure
(which makes sense when you think about it), so yes, gasoline octane is
adjusted for altitude.
Ron
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