Kia Optima: Engine coolant - Maintenance - Kia Optima TF 2011-2026 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:

Driver's and passenger's front air bag
Driver’s front air bag Passenger’s front air bag Your vehicle is equipped with an Advanced Supplemental Restraint (Air Bag) System and lap/shoulder belts at both the driver and passenger s ...

Headlight Aiming Adjustment
Before performing aiming adjustment, make sure of the following. 1. Keep all tires inflated to the correct pressure. 2. Place the vehicle on level ground and press the front bumper & rear bump ...

Power Windows
The ignition switch must be in the ON position for power windows to operate. Each door has a power window switch that controls that door’s window. However, the driver has a power window switch w ...

Copyright www.kiopman.com 2026