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Originally Posted by Richard L
Thanks for the information.
I am still puzzled why don't they add more alcohol to their fuel to boost the octane number to some where near the chart?
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Too much alcohol and the Stoichiometric A/F ratio changes a great deal. Most cars are designed to be able to run on up to 20% Ethanol/Methanol blends ... but they have to make sure that the cars which are not designed for that can still buy gas.
Adrian~