Re: Transmission or Clutch?
All dynamic oil seals leak. If they did not leak they would fail very quickly, they rely on a very minimal leak to lubricate the seal faces. Otherwise the seal would just wear away from the heat and friction generated.
The mileage would determine the amount of oil that had leaked by the seal lip as long as the seal had not failed catastrophically.
From the picture I cannot make out where the majority of the oil is coming from, the fact that it is to the right makes me assume that it is coming from the cover plate, but I am not sure.