No your site said gas with more than 10% ethanol was not good for all cars.
EPA says, linked in the same post you didn't read above said, "Manufacturers expect ethanol blends of up to 10% to be fully compatible with current and previously manufactured gasoline-powered vehicles and engines."
Even the maker of your beloved motorcycle approves the use of E10 ethanol:
"Harley Davidson (Owners manual-2009)
GASOLINE BLENDS
Your motorcycle was designed to get the best performance
and efficiency using unleaded gasoline. Most gasoline is
blended with alcohol and/or ether to create oxygenated blends.
The type and amount of alcohol or ether added to the fuel is
important.
Do not use gasoline that contains methanol. Doing so can
result in fuel system component failure, engine damage and/
or equipment malfunction.
•
Gasoline containing METHYL TERTIARY BUTYL
ETHER (MTBE): Gasoline/MTBE blends are a mixture of
gasoline and as much as 15% MTBE, Gasoline/MTBE blends
can be used in your motorcycle.
•
ETHANOL is a mixture of 10% ethanol (Grain alcohol)
and 90% unleaded gasoline. Gasoline/ethanol blends can be
used in your motorcycle if the ethanol content does not
exceed 10%.
•
REFORMULATED OR OXYGENATED GASOLINE
(RFG): Reformulated gasoline is a term used to describe
gasoline blends that are specifically designed to burn cleaner
than other types of gasoline, leaving fewer tailpipe emissions.
They are also formulated to evaporate less when you are
filling your tank. Reformulated gasolines use additives to
• Kohler (Owners manual-2009)
oxygenate the gas. Your motorcycle will run normally using
General Recommendations
Purchase gasoline in small quantities and store in clean, this type of gas and Harley-Davidson recommends you use it
approved containers. A container with a capacity of 2 gallons when possible, as an aid to cleaner air in our environment.
or less with a pouring spout is recommended. Such a
Do not use race gas or octane boosters. Use of these
container is easier to handle and helps eliminate spillage •
fuels will damage the fuel system.
during refueling.
Do not use gasoline left over from the previous season to Some gasoline blends might adversely affect the starting,
minimize gum deposits in your fuel system and to ensure easy driveability or fuel efficiency of the motorcycle, If any of these
problems are experienced, try a different blend of gasoline or
starting.
gasoline with a higher octane blend.
Do not add oil to the gasoline."
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