I thought the 228 had the oil filler cap on the draft tube. If the tube has a solid top and the filler is on the valve cover, the change is easy. I popped the cap off the top of the tube and installed a pipe inside to block the holes that feed the lower vent to the outside. I drilled the cap for a PCV grommet and put it back on. The PCV hose from the valve was attached to the intake manifold vacumm. I will use a filler cap with an air intake filter built in.
The bypass oil filter was a an accessory that was added by the dealer or someone else. Some people (such as me) feel that they are useful and some don't.
Last edited by truckernix; 12/08/2010 3:37 AM.
