I buy ethanol free 90 in NY for something crazy like $4.75/gal. It's available in many places there. I run it in the bird, boat and small engines. None of those thigs are going through a ton of gas because I don't drive the bird that much, so it isn't terrible and worth it. We can get 93 here in MA with 10% ethanol and it is roughly the same cost but the 90/91 is about 50 cents less per gallon than the ethanol free. Different state so its a little bit apples to oranges.
I don't really notice any performance improvement and I don't drive enough miles to care about gas mileage. 69 bird is low compression so... HOWEVER I notice a significant change in the 4 cycle outboard. With ethanol gas I needed to do a full carb clean every summer, and I drive the boat 3x a week as I live on a lake. Since I started using ethanol free I have been good for 2 years! Now I will ONLY use ethanol free in all my small engines.
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