This is my first DIY job on my Porsche. I've just drained the oil from my G50 tranny. I first pulled the filler plug as suggested by the wiser ones: what surprised me was the omount of oil that came out

I didn't think you could overfill the tranny if done on the level. Before proceeding with the drain plug I thought I should get an idea of how much "overfill" there really was. I drained the pan into a egg carton and filled eight of the12 troughs! I don't know exactly how much that is but it seems to be a lot. Any thoughts? Can overfilling the tranny be detrimental?