[RhysT1]

Hi guys just noticed my car has a slight leak, Its a brownish colour fluid, Its coming from behind this rubber piece in the top left of the photo, Anyone have any ideas what it could be?

[oldbilly]

depending on location it sounds like either power steering or automatic transmission fluid if its an auto.

[Dan-danGT]

That's the rear diff is it not? Only thing with oil that I know of there is the diff, unless its coming out the breather or possibly fuel? Depends I imagine you would smell fuel. Diff oil stinks aswell though

[wallsmk2]

not had a look up there on mine in detail but from memory is that rubber bit a vibration absorber? I think this bolts onto the diff. through the subframe but I can't see how it can be diff oil...could the rubber bit be leaking something?

here we go http://bmwfans.info/parts/catalog/E9...rive_output-2/ no.5 is the rubber bit so I can't see it being a leaking differential, yours looks dry as a bone.

[m1bjr]

Exhaust joint leaking dirty water?

Possibly just dirty rusty water run - off from somewhere?

There is nothing else in that region.