Sonata 2011 Owners Manual

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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 ...

Opening the fuel filler lid
The fuel filler lid must be opened from inside the vehicle by pushing the fuel filler lid opener button. NOTICE If the fuel filler lid will not open because ice has formed around it, tap lightly ...

Suspension Mounting Bolts
Check the suspension connections for looseness or damage. Retighten to the specified torque. ...