See also:

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 ...

Competitive Warranty
The 2009 Kia Optima is covered by Kia's comprehensive warranty program, which offers unprecedented consumer protection. Included in this program are a 10-year/100,000-mile limited powertrain warra ...

Explanation of scheduled maintenance items
Engine oil and filter The engine oil and filter should be changed at the intervals specified in the maintenance schedule. If the vehicle is being driven in severe conditions, more frequent oil an ...