What About Gasohol?
Gasohol (a mixture of 90% unleaded gasoline and 10% ethanol or grain alcohol) may be used in your Hyundai. However, if your engine develops driveability problems, the use of 100% unleaded gasoline is recommended. Fuels with unspecified quantities of alcohol, or alcohols other than ethanol, should not be used.
See also:
Vehicle Interior
The following should be checked each time when the vehicle is driven:
o Light operation
o Windshield wiper operation
o Horn operation
o Defroster, heater system operation (and air conditioning, if ...
Safety
The Hyundai Sonata is one of only two cars on the market that have received
both a Top Safety Pick designation from the Insurance Institute for Highway
Safety and a five-star overall safety rating ...
Fuel recommendations
Use Unleaded Gasoline
Unleaded gasoline with a Pump Octane
Rating of 87 (Research Octane Number 91)
or higher must be used in your Hyundai.
WARNING:
o Do not "top off" after the nozzl ...