Plastic Oil Cooler pipe replacement
 

In case this hasnt been posted already.
Ages ago a guy on audiworld forums lathed up an aluminium replacement for the "stupid plastic pipe"

Now there is a company in the US that makes them.

http://forums.quattroworld.com/a8/msgs/21428.phtml

I had mine replaced 2 years ago (with another plastic one), but I'm going to get an Alu one for the future :)