See also:

Fuel requirements
Gasoline engine (unleaded) Your new Kia vehicle is designed to use only unleaded fuel with a minimum Octane Rating of 87 Anti-Knock Index (AKI). NOTICE NEVER USE LEADED FUEL. The use of leaded ...

Exterior Excitement
The 2009 Kia Optima is presented with new front, side and rear styling cues, which build upon Kia's philosophy of creating dynamic vehicles that evoke passion. The fog lamps and lower front grille ...

Transfer case (4WD)
Checking or changing transfer case fluid Have transfer case fluid checked or changed by an Authorized Kia Dealer according to the Maintenance Schedule at the beginning of this section. Use only ...