I run an
oil cooler on my build and drive the car frequently. I notice a build up of film on the
oil cooler lines. Thought it was caused by a bad fitting so replaced the fitting & hose. Still does the same thing. Any ideas as to what causes this? I don't see any signs of a leak.
In one of the pictures, I took my fingertip and wiped the film, just to make it show up better.
Any Ideas?
Paul