I recently had my A4 B8 2.0 TDI serviced one of the advisory from the garage was they found an oil leak from my EGR Valve. The mechanic did say to me that its nothing at all to worry about that it might just be old oil. But for a few days know its really been bugging me and will like to have thoughts about it from other B8 owners if they have experienced any oil near the EGR Valve before?