Quote Originally Posted by PK View Post
Trekky, IIRC there are 3 rings on our pistons.
The top ring seals compression in the cylinders.
The bottom ring controls oil on the cylinder walls.
The middle ring is multipurpose - it does a bit of each.

So, it is possible to have excessive blowby without being an oil burner, and vice-versa.

PK
X a factor of 2...

I've gutted my PCV system, & it now flows freely into a catch can, which is vented into the air box, with zero reduction in oil consumption.