I had the valve cover gaskets replaced to fix a rather obnoxious leak. The replacement fix most of the leak but now it is leaking from the front driver's side corner. I had the mechanic redo it and it did not fix the problem. I know the 2.8L is notorious for valve cover leaks. Is the front corner typical for this problem. Is there a "trick" to remedy this? Is it possible the cover itself is slightly warped causing the leak?

Any help would be appreciated.

 

the corners of the gaskets are the most difficult places to get sealed properly. I believe that most of the write ups call for using RTV in the corners, in addition to the gasket itself

 

Front drivers side is where the cam chain tensioners are located. These are common oil leak locations, adjacent to the valve cover gaskets & won't be fixed if the mechanic did valve cover gaskets only. A bit more of a task to replace the tensioner gasket & half moon seal, but if you were due for valve cover gaskets, I expect you are also due for tensioner gaskets. This site discusses how to diagnosis & replace the tensioner gaskets if you plan on fixing it yourself. Audi A6 Oil Leak - Audi A6 Oil Leaks - Audi A6 Oil Burning SmellNote that you'll need a special tool for relieving cam chain tension.