The following pictures that Ray Davis is going to post for me will show an installation we just did yesterday on my bus. I had Walker Engineering build and install an Air-Sep on my motor. This eliminates the engine vent or draft tube that exits under your engine on the driver side by the oil filters. It then closes the crank case, better for air quality! For me the reason was to make sure the area behind the engine stays dry and clean. The other up sides to the Air Sep is it takes your engine from a positive crankcase pressure into a slight negative pressure. This should be worth a little, I said little extra HP and fuel mileage. Just wanted to share this with the group.