Possible causes of oil leakage after replacing the automatic transmission oil seal:
1. Incorrect installation of the oil seal:
* The seal may have been damaged during installation.
* The oil seal may have been installed incorrectly or unevenly.
*No lubricant was used to simplify installation.
2. Defective oil seal:
* The oil seal may be made of low-quality materials.
* The seal may have cracks or defects.
3. Problem with the automatic transmission shaft or housing:
* The transmission shaft may be worn or deformed.
* The transmission housing may be cracked or deformed.
4. Bolt tightening:
* Automatic transmission bolts must be tightened to the correct torque.
* Insufficient tightening may result in oil leakage.
5. Other reasons:
* The oil filter housing O-ring may be damaged or installed incorrectly.
*Valve body gasket may be leaking.
* The oil pan may be damaged or its gasket may be leaking.
What to do:
* Check the bolts and tighten them to the correct torque.
* Remove the oil seal and inspect it for damage. Replace it if necessary.
* Inspect the transmission shaft and housing for wear or damage. Repair or replace them if necessary.
*Check other potential sources of leakage, such as the oil filter housing o-ring, valve body gasket, and oil pan.
*If the leak persists, contact a qualified mechanic for further diagnosis and repair.