Kia Optima: Engine coolant - Maintenance - Kia Optima TF 2011-2025 Owners ManualKia Optima: 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 a year, at the beginning of the winter season, and before traveling to a colder climate.

Changing the engine oil and filter
Have engine oil and filter changed by an authorized Kia dealer according to the Maintenance Schedule at the beginning of this section. WARNING Used engine oil may cause irritation or cancer ...

Checking the coolant level
WARNING Removing radiator cap Never attempt to remove the radiator cap while the engine is operating or hot. Doing so might lead to cooling system and engine damage. Also, hot ...

See also:

Overdrive Clutch Control Solenoid Valve(OD/C_VFS). Description and Operation
Description Overdrive clutch control solenoid valve(OD/C_VFS) is attached to the valve body. This variable force solenoid valve directly controls the hydraulic pressure inside the overdrive clutc ...

Airbag-advanced supplemental restraint system
* The actual air bags in the vehicle may differ from the illustration. (1) Driver’s front air bag (2) Passenger’s front air bag (3) Side impact air bag (4) Curtain air bag WARNING Even in vehi ...

Panoramaroof Switch. Repair procedures
Inspection 1. Disconnect the negative (-) battery terminal. 2. Remove the overhead console lamp assembly.(Refer to the BD group - "Roof trim") ...

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