Honda HA4118H38A Owner's Manual page 119

ADDITIONAL INFORMATION
OXYGENATED FUELS
Some conventional gasolines are being blended with alcohol or an
ether compound. These gasolines are collectively referred to as oxy-
genated fuels. To meet clean air standards, some areas of the United
States and Canada use oxygenated fuels to help reduce emissions.
If you use an oxygenated fuel, be sure it is unleaded and meets the
minimum octane rating requirement.
Before using an oxygenated fuel, try to confirm the fuel's contents.
Some states/provinces require this information to be posted on the
w-w.
The following are the EPA approved percentages of oxygenates:
ETHANOL - - (ethyl or grain alcohol) 10% by volume
You may use gasoline containing up to 10% ethanol by
volume. Gasoline containing ethanol may be marketed
under the name "Gasohol".
MTBE ---- - (Methyl Tertiary Butyl Ether) 15% by volume
You may use gasoline containing up to 15% MTBE by
volume.
METHANOL - (methyl or wood alcohol) 5% by volume
You may use gasoline containing up to 5% methanol by
volume, as long as it also contains cosolvents and cor-
rosion inhibitors to protect the fuel system. Gasoline
containing more than 5% methanol by volume may
cause starting and/or performance problems. It may
also damage metal, rubber, and plastic parts of your
fuel system.
If you notice any undesirable operating symptoms, try another service
station, or switch to another brand of gasoline.
Fuel system damage or performance problems resulting from the use
of an oxygenated fuel containing more than the percentages of oxy-
genates mentioned above are not covered under warranty.
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