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Technical Information 141
Oxygenated Fuels
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 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 pump.
The following are the EPA-approved
percentages of oxygenates:
ETHANOL (ethyl or grain alcohol) up to 10%
by volume.
You may use gasoline containing up to 10%
ethanol by volume. Gasoline containing ethanol
may be marketed under the name ‘‘Gasohol’’.
METHANOL (methyl or wood alcohol) up to
5% by volume.
You may use gasoline containing up to 5%
methanol by volume as long as it contains
cosolvents and corrosion 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.
(cont’d)
20CRF50F31GJGA20.book141ページ２０１９年２月１３日 水曜日 午前１１時２６分
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