Kia Optima: Replacement - Fluid. Repair procedures - Hydraulic System - Automatic Transaxle System - Kia Optima TF 2011-2025 Service ManualKia Optima: Replacement

ATF of 6 speed automatic transaxle doesn’t need to be replaced. If the vehicle is used severely in business or personal use, replace ATF every 60,000 miles.

Severe usage is defined as

Driving in rough road (Bumpy, Gravel, Snowy, Unpaved road, etc)
Driving in mountain road, ascent/descent
Repetition of short distance driving
More than 50% operation in heavy city traffic during hot weather above 32°C(89.6°F) .
Police, Taxi, Commercial type operation or trailer towing, etc
1. Remove the drain plug (A) and reinstall the drain plug after draining ATF totally.


Drain plug tightening torque:

34.3 ~ 44.1 N.m (3.5 ~ 4.5 kgf.m, 25.3 ~32.6 lb-ft)


The gasket of the drain plug use new one.
2. Fill the oil about 5 liters through eyebolt.
3. Check the oil level. (Refer to "Hydraulic system (Fluid)" in this group)

Service Adjustment Procedure
Oil level Check A check of ATF level is not normally required during scheduled services. If an oil leak is found, perfo ...

Valve Body. Description and Operation
Description The valve body is essential to automatic transaxle control and consists of various valves used to control the oil feed from the oil pump. Specifically, these valves consist of pressur ...

See also:

Keyless Entry System
You can also lock or unlock the door and open the trunk from outside with the keyless transmitter. • To lock the door, press this button once. (Hazard flasher lights are turned on once for ...

Front Fog Indicator
This light comes on when the fog lights are ON. ...

Engine compartment
2.4L Engine 2.0L Engine * The actual engine room in the vehicle may differ from the illustration. 1. Engine coolant reservoir 2. Engine oil filler cap 3. Brake/clutch fluid reservoir ...

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