This reminds me of a thread on the Chrysler Intrepid page, their solution to sucking engine vapours into the intake track, was to install a small bottle in the line, I forget the make but it has an in & out line on the top almost like the ones on a compressor, there are plenty of pictures of the amount of oil collected and kept from dirtying up the intake.

We used to have an 93 Topaz V6 that sucked oil into the intake, it required reqular cleaning, never could fix it up, but the car ran better when cleaned

Perhaps an "oil trap" could help our cars