Hi, my first-generation S60T still passes the glove test, but I'm not exactly in the position right now for a PCV replacement if arteries were to clog up.
Has anyone ever performed preventive "unclogging/cleaning" on their PCV system? I'm thinking of using a syringe to push some Penrite EGR & CAT Clean Plus down the vacuum hose and inlet hose, towards the oil trap. If that tiny brittle vacuum hose connector or the oil sump return ever clogs up like in those YouTube videos... I won't be able to hug my Volvo for a while. Planning on only using a smaller amount, letting it settle, driving for a while and then changing the engine oil and filter.
![Volvo PCV Spaghetti](https://i.postimg.cc/bNbXC48T/2007-10-17-202929-volvo-PCV.gif)
If no one's done it before (will ask elsewhere too), I'll mull it over for a few days/weeks/months, do it and then report back with the results (engine blown/not blown/etc.)
BTW I'm not new to servicing cars, have done timing belt kits and more before, and without any valves (etc.) being ejected too!