Hi I am new to this forum but I would love to contribute a little experience of mine regarding OCC. I once mount it in a position where it is higher than the rocker cover and thus, the pipe to the OCC was going upward and sludge finds it hard to make its way to the OCC. Then I install it lower than the rocker cover and the sludge was filling the tank much more efficiently and air has no problem travelling upwards the pipe. I did mine this way, 2 crankcase ventilation valve going to one pipe via a T joint and then the output of the OCC to a T joint and 2 pipes into the throttle body. Is this ok?