22,500 miles (36,000 km) or 18 months
Hyundai Sonata / Sonata 2011 Owners Manual / Maintenance / Scheduled maintenance service / 22,500 miles (36,000 km) or 18 months
❑ Inspect air cleaner filter ❑ Inspect vacuum hose ❑ Replace engine oil and filter (22,500 miles (36,000 km) or 36 months)
See also:
Brake discs, pads, calipers and rotors
Check the pads for excessive wear, discs for run out and wear, and calipers for
fluid leakage. ...
Key Positions
WARNING:
The engine should not be turned off or the key removed from the ignition key
cylinder while the vehicle is in motion. The steering wheel is locked by removing
the key.
o "START&q ...
Use of MTBE
HYUNDAI recommends avoiding fuels containing MTBE (Methyl Tertiary Butyl Ether)
over 15.0% vol. (Oxygen Content 2.7% weight) in your vehicle.
Fuel containing MTBE over 15.0% vol. (Oxygen Content 2. ...


