Common causes of oil leakage from the automatic transmission:
* Pan Gasket Leaking: This is a common cause, often caused by aging or damaged pan gaskets.
* Damage to the input shaft oil seal: This oil seal prevents oil from leaking from the transmission. It may wear out or become damaged over time.
* Input Shaft Oil Seal: The input shaft oil seal seals the connection between the engine and transmission. It can also wear out and cause leaks.
* Rear Seal Leak: The rear seal seals the torque transmitted to the differential. It may fail or wear out.
* Broken transmission housing: A damaged transmission housing can cause oil leakage. This may be caused by impact or corrosion.
*Damaged Oil Filter: The oil filter can become worn or clogged, which can increase transmission pressure and cause leaks.
* Damage to the oil pump: The oil pump supplies oil to the transmission components. If the pump is damaged, it can cause insufficient oil pressure and leaks.
* Incorrect oil level: An oil level that is too low can cause overheating and leaks, and an oil level that is too high can create too much pressure and cause leaks.
* Faulty Transmission Control Module (TCM): The TCM monitors transmission operation. If the TCM is faulty, it can cause the transmission to malfunction and leak.
Additional reasons specific to certain types of automatic transmissions:
*Dual Clutch Transmissions: Damage to the clutches, clutch forks, or hydraulic system can result in oil leaks.
*Continuously Variable Transmission (CVT): Damage to the CVT belt or chain, or problems with the hydraulic system can cause oil leaks.