See also:

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 ...

If the engine overheats
If your temperature gauge indicates overheating, you experience a loss of power, or hear loud pinging or knocking, the engine will probably be too hot. If this happens, you should: 1. Pull off th ...

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 ...