I got bad news for you. 91 octane has ethanol in it unless you buy an E0 formulation.
Higher ethanol fuels are a scam perpetrated on the consumer to indirectly subsidize the corn “farmer”, which in the US are owned mostly by large corporations. Ethanol based fuels have a lower heating value, are corrosive to engine parts, dry out seals, etc. Thus you actually get worse gas mileage, burn more fuel, and emit more pollutants per mile. Not to mention the harmful fertilizers and pesticides used for growing the crops.
You want to find the truth in anything, follow the money.
View attachment 240882
$3.76/gal PBG, FL
View attachment 240881