oil leak in an S80
I have a 2002 S80 non-turbo that has developed an oil leak in an oil line
going from the engine to the radiator. It is leaking from what appears to
be a Shrader valve in that line. My mechanic replaced the PVC valve block
on suggestions from Volvo and that fixed it for a while, but the leak is
back, not as much, but still leaking. Does anyone have any idea what this
valve is there for, and why it might be leaking?