See also:

Rear differential (4WD)
Checking or changing rear differential fluid Have rear differential fluid checked or changed by an Authorized Kia Dealer according to the Maintenance Schedule at the beginning of this section. ...

FAST FACTS
1. The Optima makes 200-hp from a standard direct-injection 2.4L 4-cylinder, while achieving best-in-class 24/35-mpg (city/hwy) fuel economy. 2. Optional class exclusive features include a panoram ...

Driving tips
Fuel requirements Emission control system Before driving Suggestions for economical operation Special driving conditions Using four-wheel drive Weight of the vehicle Trailer towing Overloading ...