See also:

Engine cooling system
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 ...

Interior overview
1. Door lock/unlock button 2. Outside rearview mirror control switch 3. Power window switches 4. Master power door lock control 5. Master power window control lock 6. Steering wheel 7. Instrum ...

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 ...