Honda H5518H Owner's Manual page 34

Oxygenatedfuels
Some conventional gasolines are being blended with alcohol or an ether
compound. These gasolines are collectively referred to as oxygenated fuels.
To meet clean air standardssome areas of the United Sates 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 pump.
The following are the EPA approved percentages of oxygenates:
ETHANOL-
(ethyl or grain alcohol)1 O%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)l5%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 corrosion
inhibitors to protect the fuel system. Gasoline containing more
than S%methanol by volume may cause starting and/or per-
formance problems.lt may also damage metalrubber, 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 oxygenates
mentinoed above are not covered under warranty.
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