This is the Mann Hummel Provent 200 PCV filter that myself and a lot of others have fitted to our Patrols.
http://i758.photobucket.com/albums/x...BGCLRica_a.jpg
On the main unit (centre of photo) you can see the inlet and outlet fittings that connect to the PCV hose. You basically cut the hose in half and fit the filter in the middle. The small fitting on the bottom of the main unit is the collected oil drain, most of us just put a length of hose on here with a tap on the bottom for periodic draining. You can buy a valve that allows you to connect the bottom fitting to the sump for auto draining, I have a valve but never got around to fitting the auto drain.
http://i758.photobucket.com/albums/x...0707Medium.jpg
Above is the Provent installed in my Patrol.
Tony