I am sure the fluid is coming from the FD. When I shine a light up the tube it is dry. I would think as long as I am in to it I would want to rebuild everything as it needs. The bearings and seals at least. Will I need to order parts from BMW or is there another source I can use and is there a parts list for this on the forum.
Some parts you may need to order from BMW. the main parts you will need to do a rebuild are the crown bearing, main seal and the pinion seal. If you intend to replace any of the other bearings, then a full setup of everything is required and if you haven't done it before, I would just pack it up and send it to Dave (Saddleman) and have him do it for you. He is also in NC so you might be able to just drive it to him and save shipping cost.
If you go ahead and do it yourself, you will need to do some measuring to determine what shims are needed for the new bearings you replace and adjust the gear interference and backlash and also the preload on the interior taper bearing.
Max BMW has the parts list in the FD and the list will vary depending on what you replace and how much you do.
Minimum parts list would be, seeing your pinion seal is leaking.
MAX BMW FICHE
33 11 7 665 838 SHAFT SEAL - 35X47X7 0.02 1 $14.05
33 12 1 242 211 GROOVED BALL BEARING - 85X120X18 1.15 1 $122.06
33 12 7 663 482 SHAFT SEAL - 85X110X10 0.13 1 $36.18
And likely some shims to adjust the preload on the taper bearing assuming the taper bearing and seat are in good shape and not lose on the shaft. The shims can not be determined until the measurement is taken. You might be one of the lucky ones and your original shims may be correct. If you are not and yours is like mine being .2.. over shimmed, then you need to get the correct shims and adjust the pack for the proper preload.
I am going to say it again, it is easy to get this wrong so if you have not done it before and don't have all the proper tools, you are better off letting Dave do it for you. You will get a quality job at a reasonable price for what he does. There are several other things you will need to be aware of to look for with these so it isn't just slap a new bearing and seal in and you are done.
What say you Danny? How much do you want to do on this FD?