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Hyundai TSB #21-AT-006H
2003 Hyundai Sonata
TSB Document:
Affected Component: POWER TRAIN
- Summary
- Hyundai approves only the ATF, DCT gear oil and IVT gear oil specified in the vehicle’s owner’s manual.  Use of other ATF may result in improper shift quality or other drivability conditions.  Use of other DCT and IVT gear oil may result in reduced durability. Hyundai does not approve the use of any aftermarket ATF or gear oil additives.
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