Hey Everyone,

My first post after much much reading - wow what a great place!
I've just changed the engine breather valve on my 2004 E53 3.0d.
I was expecting it to be a foam filter one, but it was a vortex one instead.
I changed it anyway to a new vortex one.

Question is: do the vortex type breather valves still need to be changed regularly like the foam ones, or are they pretty much ok to leave for ages?