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. ...

Interior Refinement
The style makeover continues into the Optima's cabin with expanded electronics melded with refreshed fascia patterns and color schemes. Based on a new platform, the standard audio system features ...

Under-the-Hood Options
Kia Soul offers an agile, smooth and spirited ride. Its 1.6-liter, four-cylinder engine is mated to a five-speed manual transmission, which produces approximately 120 horsepower. For those looking ...