Inverted flight

[Bob Turner]

I just heard of a GCAA (aerobatic, but no inverted oil) that lost all its oil during inverted flight. While I am not interested in negative G flight without an inverted system, I find myself wondering how all that oil got out the breather tube so fast. Surely the engine quit long before the first quart headed for someone's clothesline?

 

[Citabria.pt]

I loose around 0.2 to 0.5 qts each time I go "hard" on an Airshow, also performing kinda inverted flight on my 7ECA. The engine quits on the slightest negative-g, and I go back to wheels down after stalling inverted. No way I've lost more than 0.5 qts ever due to inverted.