Honda GOLDWING GL1500 Owner's Manual page 34

MAJOR COMPONENTS
(Information you need to operate this motorcycle)
Petrol Containing Alcohol
If you decide to use a petrol containing alcohol (gasohol), be
sure it's octane rating is at least as high as that recommended
by Honda. There are two types of "gasohol": one containing
ethanol, and the other containing methanol. Do not use
gasohol that contains more than 100/0 ethanol. Do not use
petrol containing methanol (methyl or wood alcohol) that does
not also contain cosolvents and corrosion inhibitors for
methanol. Never use petrol containing more than 5 %
methanol, even if it has cosolvents and corrosion inhibitors.
NOTE:
• Fuel system damage or engine performance problems
resulting from the use of fuels that contain alcohol is not
covered under the warranty. Honda cannot endorse the use
of fuels containing methanol since evidence of their
suitability is as yet incomplete.
• Before buying fuel from an unfamiliar station, try to find out
the fuel contains alcohol, if it does, confirm the type and
percentage of alcohol used. If you notice any undesirable
operating symptoms while using a petrol that contains
alcohol, or one that you think contains alcohol, switch to a
petrol that you know does not contain alcohol.
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