After 4 years of trying everything else, I bought their neat little air/oil separator.
My belly is clean, and it stays clean! Yay! And it is relatively inexpensive, too! Rolly Clark RV-9
I was going to wait until I had some more hours before commenting. I've got just a little over 5 hrs since installation my beasts belly is clean as a whistle. I'm impressed so far!!
Of course it's only 5 hours; but I've been pushing it pretty hard. At the same time I added this; went over my plenum taping or sealing every possible gap in the baffeling. I put a washer behind the #3 cylinder. All the things suggested on other threads. So, I've been blasting WOT from 130' to 8500 grinning that my hottest cyl. #3, never exceeded 367 *F.
After last flight, I inspect belly again and nothing. I wiped my finger over the paint & usual dirty places & no oil film. It's dry.
Thanks Allan for a really good product & everyone else for the cooling tips.
