Thanks dieselbenz1 I’ll check into that. I found a few on Amazon to chose from. I’ll be installing one soon because it looks pretty clear to me the PCV system is the source of gunk in the intake system of these engines. For $20-30 bucks it’s a no brainer and since my EGR is no longer hooked up I’m sure my little OM602 will be happy to breath clean air and last a few more decades.