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Here in Ontario, Canada, the pumps at the Shell station state something like : "Shell Bronze [87] contains up to 10% Ethanol, Shell Silver [89] contains up to 5% Ethanol, Shell V-Power [91] contains no Ethanol. Pumps at most gas stations simply state "may contain up to 10% Ethanol".
Either way, when the local supply switches over to the winter blend, my gas mileage takes a significant dive.