Originally Posted by tibra1
I dont think ANY wetness or leaks around diff is normal..change the seals..most likely culprit
If you follow the guideline of refilling the diff until the fluid leaks out of the drain hole...you'll get a little bit of normal leakage. The amount should be very small and shouldn't amount to more than staining.
If the E9X design is like the E46...for those who go to the track, you'll be changing those seals everytime you climb under the car. If you see the design of the seal, there is a spring on the side of the opening for the output flange. That spring holds the seal against the flange which creates the seal. That spring is not super tight and won't prevent all seepage. It does prevent your diff fluid from pouring out.