View Single Post
      02-25-2013, 08:38 AM   #17
Surly73
Captain
Canada
10
Rep
724
Posts

 
Drives: 2007 E90 328i 6MT sport/prem
Join Date: May 2012
Location: Oakville, Ontario

iTrader: (0)

Quote:
Originally Posted by millseyent View Post
Did you do any more investigation on this?? My cap looks exactly like that.
It's a water emulsion from short trips and cold weather. It condenses out at the cap because it's the coolest point in the system.