It works! It has oil in it!
No, I am not trying to start yet another oil catch can thread but yesterday, 600 miles after I installed one, I checked and there was about a TBS and a half of oil in it! The blasted thing works!
I don't know how significant one and a half TBS of oil would be over 600 miles but I was surprised there was that much oil in the can.
I know there have been many threads, in several forums, about which oil catch can is best, so I won't fan those flames. But the one I bought does work, as I'm sure they all do.o