Rotax publishes 10% ethanol use. That's what they tested. There are places in the world that are over double this. Fuel tanks can be the issue especially if they are fiberglass. Call your aircraft Mfg to make sure about ethanol use and their tanks. Hose and engine aren't usually the issue. Fuel tanks can be sloshed with protectants to ensure ethanol isn't an issue. Flight Design sloshes all their tanks and you can put anything in them.
Roger Lee LSRM-A & Rotax Instructor & Rotax IRC Tucson, AZ Ryan Airfield (KRYN) 520-349-7056 Cell
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