JimF: what is the "VFC"?
Also: Gilly: this 'liquid' was very thick and greasy - almost like vaseline in its consistency. Could it have been some bumper lube of sorts? But these are the thin euro bumpers, so unlikely.
Seemed (although small amount) to originate near the bottom of the radiator area on a kind of crossbare, but again - this was a clear, vaseline style, non-smelling thing. Goopy, in a sense.