Honda H5013 Owner's Manual page 41

GASOLINES CONTAINING ALCOHOL
If you decide to use a gasoline containing alcohol (gasohol), be sure its oc-
tane rating is at least as high as that recommended by Honda (see
Gasoline Recommendation on page 38). There are two types of
"gasohol":
one containing ethanol, and the other containing methanol.
m
Using gasohol that contains more than 10% ethanol, or
gasoline containing methanol (methyl or wood alcohol) that does not also
contain cosolvents and corrosion inhibitors for methanol, can cause
serious fuel system damage and poor engine performance.
Never use gasoline containing more than 5% methanol, even if it has
cosolvents and corrosion inhibitors.
Honda cannot endorse the use of gasoline containing methanol since
evidence of its suitability is as yet incomplete.
NOTE: Fuel system damage or engine performance problems resulting
from the use of gasoline that contains alcohol is not covered under the
warranty.
Before buying gasoline from an unfamiliar station, first determine if the
gasoline contains alcohol; if it does, find out the type and percentage of
alcohol used.
NOTE: If you notice any undesirable operating symptoms while using a
gasoline that contains alcohol, or one that you think contains alcohol,
switch to a gasoline that you know does not contain alcohol.
39