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:

Certification label
The certification label is located on the driver's door sill at the center pillar. This label shows the maximum allowable weight of the fully loaded vehicle. This is called the GVWR (Gros ...

Muffler > Repair procedures
Removal and Installation 1. Remove the front muffler (B) after disconnecting the oxygen sensor connector (A). Tightening torque:39.2 ~ 58.8 N.m (4.0 ~ 6.0 kgf.m, 28.9 ...

Removal
[Bank 1 / Intake] 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Remove the OTS (A). 3. Disco ...

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