Maintenance
Hyundai Sonata / Sonata 2011 Owners Manual / Maintenance
See also:
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. ...
General checks
Engine Compartment
The following should be checked regularly:
o Engine oil level and condition.
o Transaxle fluid level and condition.
o Brake fluid level.
o Clutch fluid level.
o Engine coolant ...
Engine Coolant Temperature Warning Light
WARNING:
Never remove the radiator cap when the engine is hot. The engine coolant is
under pressure and could erupt and cause severe burns. Wait until the engine is
cool before removing the rad ...


