Originally Posted by BimmerDude

Hello everyone! I have this small leak of oil coming from the trans and engine. I took it to the dealer and they said it was the "Rear main seal".
So they changed it under warranty. But a few days later I got the same F$&*#* leak again!!! So I took it back today. Now they still haven't found the problem yet, they said its such a small leak that its not very noticeable, plus it is on the back of engine all the way on they top side. So what they have done is put this oil dye in the engine to see tomorrow with a black light as to where the oil is leaking from. Does anybody know what this could be? And if so what can be done? Thanks. Everyone on this site is 150 Times smarter then those so called techs that BMW has.