On fast right hand turns, the three way hose will put a boat load of oil in your intake. I had one on my 1.5TD and i took it off because of it.The catch can thing would be a good if you had some sort of check valve in the block drain line.I suspect that in a zippy right turn, the oil sloshes to the right, hits the crank, and get blasted right at the port. Then up the tube it goes and the motor gets very angry.