I always find your articles enlightening and enjoyable. And I share the challenges of ethanol fuel, as we can not get ethanol-free anywhere near where I live. My solution is to add Marvel Mystery Oil to the fuel each time I add fuel. I also try to exercise them regularly, weather permitting. But... it would take more driving than I would do to burn through a full tank of gas before it got to be very old. My compromise is to add fuel in 5-7 gallon increments, keeping the tank about half full, especially before winter. My winter (in Virginia) is not as severe or long as yours, but I am curious your advice on my compromise: is it better to fill the tank full to prevent room for condensation, but then to have fuel get older before the next fueling, or to keep at least several gallons (at least five) in a tank, and to add fresh more regularly? So far, I haven't had any major fuel problems, but have had the usual fuel hose, fuel pump, and carburetor maintenance issues likely caused (or at least contributed to) by the ethanol fuel.
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