Transmission fluid change

Tiny
JPARRA602
  • MEMBER
  • 2013 KIA OPTIMA
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 103,000 MILES
I have never done a transmission flush to my car.
My car now has 103,000 miles. Should I change the transmission fluid at this point or just leave it alone?
Thursday, January 9th, 2020 AT 7:05 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

It is due at 100,000 for changing the fluid. Do not neglect it or it will cause you headaches down the road.

I would not flush. Just do an oil change only.

Roy

CAUTION:
Keep on each speed position more than 2 sec.

6. Lift the vehicle, then remove the oil level plug (A) from the valve body cover.

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CAUTION:
At this time, the vehicle must be at a level state.

7. If the oil flows out of the overflow plug in thin steady stream, the oil level is correct.
Then finish the procedure and tighten the oil plug.

NOTE:
Oil level check (excess or shortage) method
Excess: Oil flows out in thick stream.
Shortage: No oil flows out of the overflow plug.

CAUTION:
If there is no damage at the automatic transaxle and the oil cooler, the oil cooler hose, transaxle case, valve body tightening state are normal, ATF must drip out after performing above 1 to 7 procedures. After performing above 1 to 7 procedures, if the oil doesn't drip out, inspect the automatic transaxle assembly.

CAUTION:
Replace the gasket of the oil level plug and use new one whenever loosening the oil level plug.

Oil level plug tightening torque:
34.3 - 44.1 N.M (3.5 - 4.5 kgf.M, 25.3 - 32.6 lb-ft)

8. Put down the vehicle with the lift and then tighten the eyebolt.

Replacement

NOTE:
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.

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Drain plug tightening torque:
34.3 - 44.1 N.M (3.5 - 4.5 kgf.M, 25.3 - 32.6 lb-ft)

CAUTION:
The gasket of the drain plug use new one.

2. Fill the oil about 5 liters through eyebolt.
3. Check the oil level.
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Thursday, January 9th, 2020 AT 7:32 PM
Tiny
JPARRA602
  • MEMBER
  • 9 POSTS
Thank you !
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Thursday, January 9th, 2020 AT 7:58 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Always glad to help.

Roy
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Thursday, January 9th, 2020 AT 8:24 PM

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