A sticky breather valve, a clogged passage etc.
But that wasn't actually my point. As you know crankcase pressure is created by the well sealed pistons moving in the cylinders and case.
On modern smallblocks it seems to push a lot of oil into the airbox through the breather system.
Therefore consumption is sometimes from drawing it into the throttle body and introducing it to the combustion chamber that way even though the rings are fine.
That was the point.
Are you suggesting a design fault.?
I think not , lots of happy customers
My “old” SB, 8v 650, jerry rigged breather, sort of same
Zero anything in catch tank
If I overfilled it, who knows?
