Hi,
It's somewhat hard for me to see the sensor. However, I suspect you are referring to the vehicle speed sensor. Take a look at pic 1 and let me know if that looks like what you see.
Next, the gearbox can be leaking simply from the gasket where the casing is connected. And yes, there are axle seals on the transmission.
Here is what I suggest: Use a good degreaser and pressure wash the areas that are wet. Then, drive the vehicle to see where the leak is starting.
Let me know if I can help.
Image (Click to make bigger)
SPONSORED LINKS
Monday, December 28th, 2020 AT 11:17 PM