Plastex, please bear in mind you will not SEE the torque converter plug leaking, it's the speed of the converter spinning that pushes out the oil past the threads.
It was a real bitch for me to realise the problem, just trying to save you the same pain!

 

But the plug looked totally dry, no fluid in the threads. I am going to put her back together with a new plug seal for the converter and see what happens. I have the filter and seals coming from 928 Specialists tomorow so that I can get it back together this weekend.

Oscar

 

Read the trans additive can and see what they recommend for use procedure. Some want you to add their product, drive for a bit, them drain/refill with new fluid. The Mobil-1 fluid, expensive at $6+/qt, should be considered only after you have the other issues sorted. You can buy a case of standard ATF for less than the cost of 3 bottles of M1 fluid. Don't want to waste that M1 dribbling out on the floor. Plus it's real easy to change over once you are sure the leaks are done-- don't even need to pull the pan.