Hey all, my slightly annoying oil usage problem which seems VERY common in M54 engined cars got me curious... So i've just had a poke around the engine bay and found this. There is a distinct oil coloured discolouration amongst the slightly oxidised aluminium oil filter housing. It has a brown ring around the lip, but lots more on the engine side also! My girlfriend also pointed out to me that she can smell a slight odour on hard accelleration which seems to suggest its leaking somewhere and immediately evaporating. No exhaust smoke thankfully 
Now I need a huge spanner to look inside, half hoping to find a gasket is missing or something!

What do you all think? Does yours look similar?? Thanks
Now I need a huge spanner to look inside, half hoping to find a gasket is missing or something!

What do you all think? Does yours look similar?? Thanks