The 3 Most Common Leaks

Although there are multiple places on a vehicle where transmission fluid can leak, the 3 most common include:

1. Pan gasket
2. Cooler lines
3. Output, tail, or torque converter seal

A few other sources of leaks that are not as common include a rusted trans pan, damaged torque converter, external sensor housing, tail housing gasket, side cover gasket, filler tube, cracked case, etc.   These are not typically as common, unless you are driving an older Ford Taurus with the AX4N or AX4S transmission, as these are notorious for grooved torque converters which will cause excessive fluid leaks.