See also:

Overview
Kia Motors America (KMA) unveiled the 2009 Kia Optima midsize sedan at the New York International Auto Show. On sale in early fall, the refreshed Optima offers a completely modified exterior, whic ...

Engine coolant
The high-pressure cooling system has a reservoir filled with year-round antifreeze coolant. The reservoir is filled at the factory. Check the antifreeze protection and coolant level at least once ...

Overheating
If your temperature gauge indicates overheating, if you experience a loss of power, or if you hear a loud knocking or pinging noise, the engine has probably overheated. Should any of these symptom ...