Honda FES125/A S-wing Manual Del Propietário página 51

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 petrol that
contains more than 10% 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.
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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 if 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.