It sounds like you are asking about a car's transmission leaking. To help you troubleshoot this, I need more information.
Please tell me:
* What kind of car do you have? (Make, model, year)
* Where specifically is the leak located? (Is it directly below the transmission, near the engine, or somewhere else?)
* What color is the fluid leaking? (Transmission fluid is typically red or pink, but other colors could indicate a different problem.)
* Have you noticed any other symptoms? (Like slipping gears, rough shifting, or a burning smell?)
Once I have this information, I can give you more specific advice on what might be causing the leak and what you can do about it.
