AB's new GQ is finally here

[AB]

Does your oil return above or below the sump oil level? Do you have a one way valve in the drain line? Does it even need one I dunno. But could it be back flow up your oil drain? Sent from my SM-G925I using Tapatalk

Also, no you don't need a one way valve. You just want oil to flow the quickest way possible with as much volume you can give mate.