Oil cooler line leaking at connection?

[Eyvind Spangen]

My oil cooler line is leaking right at the connection to the cooler
itself. I tried changing the O-ring seal, but that didn't help at all.

Could the line be rusted out and having a pinhole leak? I tried
spraying carb cleaner while the engine was running, that was how I
found the source of the leak, but I'm not able to see it it's leaking
past the O-ring or if the line itself is bad..

Check the illustration here: http://www.spangen.no/lekkasje.jpg

--
MVH
Eyvind Spangen