Hello, does anyone have experience with older W124 leaking transmission? I would park the car and it would slowly leak (but continuously) until the floor is a puddle after a few weeks. So it appears to be continuously leaking a tiny amount over time. I can still drive it by topping up the fluids. But it's an annoying mess and the building parking authority is giving me a hassle.

Any idea what it is? Is it an easy fix from the outside or do I have to unzip the transmission.