[alwaysbored786]

your tranny for reverse is probably going out. this is a common issue with your model. i have same problem. best thing to do try not to reverse on steep hills and will prevent it from burning out

I doubt it, reverse issue is only a known problem for automatics.

As for the rubbing issue, it may just be the way to gearbox is, or it could be oil like you suggested.

You can easily paint your window trim black, or you can vinyl it black using a product called bmw shadowline (thats what i did), for more info on these things try searching, there is a lot of info on it.

As for the oil light issue, the second poster is pretty much on the dot.