I had the same issue with the FD in our D24. It began leaking quite a bit after we had the car for a while. Replacing the seals is something I would take on myself, but I didn't have, nor could I find the tools to do the job. I also couldn't find anyone that would do the work, not even AB at the time. A couple places said they'd "try", but no guarantees. Other than the leaks, the unit worked well. To shorten the story, I replaced the FD oil with Type F automatic transmission fluid, the stuff with the additives that swell seals. After maybe 20-30 miles of driving the car around, the leaks stopped, completely. This was at least 15 years ago, maybe even closer to 20, and it hasn't leaked since. I read a few years afterwards, and you've probably read some of those threads herein, recommendations not to use automatic transmission fluid, especially with the "seal conditioning" additive(s). I believe the rub is that the additives that condition the seals will eventually cause their failure, so it's not a true fix. That may be, but as I wrote, I've had no issues with our FD unit for quite some time - even though I'm prepared for the failure of those seals due to the info from this Forum.