Audi S4 B6 4.2 Oil consumption due to PCV valve

[mdelbuono23]

Was wondering if anyone had any experience with the PCV valve on a 4.2. My s4 has always had oil consumption problems but latly it is getting really bad. When I first got the car it was about a quart ever 500-600k. now its way worse. after moths of owning the car the PCV valve was making a weird noise. I was able to prop it and tighten it to make it stop but im reading now that the PCV valve can actually cause oil consumption. I know I probably shouldn't have propped it to fix it but now im starting to slightly hear it again. wondering if its getting worse which is causing more oil consumption. I always thought it was due to bad valve seals but im wondering otherwise. Any thoughts???

[VroomTT]

I'd change the PCV in your situation. It significantly helped with my oil consumption. Don't go aftermarket, get the oem one. Aftermarket ones fail within a week. Ask me how I know that...

[dufferdude]

Would this apply to a B7 RS4 too?

[VroomTT]

Would this apply to a B7 RS4 too?

I'm not fully familiar with the pcv system on the RS, so I'm sure someone more knowledgeable on that engine can chime in. Def applies to S4 B6 & B7 tho.

[Terry.Reese]

My aftermarket is still running great after 5000 miles

[Mr. Corey]

Which brand of oil are you running? I've noticed the few times I've ran mobile 1 - 0-40 euro formula my car didn't like it.....and consumption was the worst I've ever encountered even compared to when my valve seals failed. I only run liqui moly oil now and don't have any issues. I'd start with switching up your oil and PVC to see if your improve your consumption issues.