Oxygenated Fuels - Honda Sportrax TRX250X 2019 Owner's Manual

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 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 for
non-road vehicles:
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".
Do not use gasoline containing more than 10% ethanol by volume.
The use of gasoline containing a higher percentage (e.g. E15, E20,
E85) of ethanol has not been approved for use in this vehicle and
may cause starting and/or performance problems and can also
damage metal, rubber, and plastic parts of the fuel system and are
not be covered by the Distributor's Limited Warranty.
METHANOL (methyl or wood alcohol) up to 5% by Volume
You may use gasoline containing methanol 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 5% methanol by volume may cause starting and/or
performance problems. It may also damage metal, rubber, and
plastic parts of your fuel system.
Technical Information 187