Air cleaner

Filter replacement
It must be replaced when necessary, and should not be cleaned and reused.
Replace the filter according to the Maintenance Schedule.
If the vehicle is operated in extremely dusty or sandy areas, replace the element more often than the usual recommended intervals.
CAUTION:
• Do not drive with the air cleaner
removed; this will result in excessive
engine wear.
• Use a KIA genuine part. Use of non-genuine parts could damage the air flow sensor.
See also:
Lubricants and fluids
Checking the washer fluid level
The reservoir is translucent so that you
can check the level with a quick visual
inspection.
Check the fluid level in the washer fluid
reservoir and add fluid if ...
Efficient, Powerful Engine
Available in two powerplants - a 2.4-liter four-cylinder or a 2.7-liter V6
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only), the 2009 Kia Optima introduces a new ...
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 ...


