Klaus, on a recent post for a 2004 v70, with oil leaks you mentioned checking
the PVC/Flame Trap.
I was under the impression these simple devices were replaced by a system
you now need to take a fair bit of the engine apart to get to.
Your description fits my 850 and earlier Volvo cars. So I lifted the hood and went looking:
The 2004 V70 and 2003 XC both have a small black "Y" part just before the intake manifold, that could contain the screen. The part does not appear to come apart... but maybe you replace the total Y now (?) and not just the plastic screen.
Anyone's thoughts/ guidance is welcome.
thx
Art