Ok, in this post http://www.bimmer.info/forum/showthread.php?t=28632
We asked about the lines on top of the motor, Now we have another question about this
http://blowneuroz.com/mygallery/E34%...%20Build/3.jpg
right next to the oil dip stick there is that little filter. Where does that line normally lead?
Milkboot & Snakeyes