[Silver Streek]

So I have 325d LCI it's a late 2009 so has the last iteration of the M57 engine.

My question is should the CCV be changed? It's now done 90k miles and I'm assuming that it will not have the bog roll type as was used in the E46 and some early E90's.

There are two parts to the assembly one is the bog roll/vortex on one end and the other end has a red rubber diaphragm in it. Do the diaphragms fail as well or are these vortex style CCV's just for and forget??

Thanks