Hyundai Azera: Fuel requirements
Your new vehicle is designed to use only unleaded fuel having a pump octane number ((R+M)/2) of 87 (Research Octane Number 91) or higher.
Your new vehicle is designed to obtain maximum performance with UNLEADED FUEL, as well as minimize exhaust emissions and spark plug fouling.
Never add any fuel system cleaning agents to the fuel tank other than what has been specified. (Consult an authorized HYUNDAI dealer for details.)
WARNING - Refueling
✽ NOTICE
Tighten the cap until it clicks one time, otherwise the warning light “Check Fuel Cap” will illuminate on the LCD display.
Symbols used in this manual
Gasoline containing alcohol and methanolValve clearance
Inspect excessive valve noise and/or engine vibration and adjust if necessary.
An authorized HYUNDAI dealer should perform the operation. ...
Spark plugs
Make sure to install new spark plugs of the correct heat range. ...
Timing Chain Cover Components and Components Location
Components
1. Timing chain cover2. Gasket
...