Apparently transmission fluid will leak through the cable adjuster hardware if it is the lowest point in the system. Opened my Cycle Shell to find this today:



Had it disconnected to re-route for my new bars. Didn't know what it was at first, but then I propped the cable up through the forks and saw it still slowly leaking through the bottom fitting. It was very sludge like. I'm thinking I need to change the fluid.

 

Yep, gravity is amazing.....