Bad day on the dyno...

[WSSix]

Originally Posted by GregWeld

Better yet ===== never have to worry about draining.... while the motor is out and the pan is off add a bung/fitting and have the catch can drain directly back to the motor.

You can put an inline check valve on the return to pan line that opens once oil above the valve becomes too much for the valve to stay closed against. Cummins has this on their engines for the breather for the exact same reasons.