First of all, you need to make sure that the transmissive liquid is leaking, not the engine oil from the BMW 3 E46 engine, which can be dribred onto the transformer's transmission by air flow. The spin-off fluid is dark red and it is necessary to clear the crankcase from all traces of lubrication and dirt to locate the source of the leak. As soon as you do this, you can make a short, short, short trip on your car. Then stop, put the car on the jack, and look closely at the following elements of the machine:
-Transmission card pallet.
-Transmission-fluid lines.
-Ventilation pipe.
-The bay of the liquid.
In most cases, the problem lies in failure or leakproofness of one of these elements.
