But Dave, the environment
Catch can is now installed as well, I'll check after a few hundred kms and let y'all know!
Well, after only ~200km, there was a good shot of oil/water/exhaustgases in the catch can, clearly it does catch a lot of stuff.
But the YouTuber "Humble Mechanic" had those sent in to a specialist who analysed the liquid, and it was to a very high degree just water.
So, I am considering venting to atmosphere through a breather as well now...