Sonata 2011 Owners Manual

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Don't Neglect the Interior
Moisture can collect under the floor mats and carpeting to cause corrosion. Check under the mats periodically to be sure the carpeting is dry. Use particular care if you carry fertilizers, cleanin ...

Do not use methanol
Fuels containing methanol (wood alcohol) should not be used in your vehicle. This type of fuel can reduce vehicle performance and damage components of the fuel system. ...

Suspension mounting bolts
Check the suspension connections for looseness or damage. Retighten to the specified torque. ...