I have a 2014 Audi Q5 Premium Plus 2.0T, with just under 90k miles on it. I've never replaced the PCV valve and up until the last year or so, have been having to add oil with more frequency. I seem to get the low oil alert after every 3rd fill up - so about 1k miles. FWIW, I've been pretty religious about changing oil every 10k miles changed oil at 8-10k miles with mobile 1 0W-40W European blend w/ a Mann Oil filter. Driving tends to be short trips...

I don't see any signs of leaks on the garage floor, but have been seeing signs of a little bit of oil on the engine cover around the oil cap. Not thick pools of oil... more like the cover is a little "wet" or discolored compared to the rest of the engine cover. Given the age and mileage, it sounds like PCV Valve is ripe for replacing regardless of having to run any measurements even as a preventative measure.... any disagreements there? If I were in there swapping out the PCV valve, is there anything else that I should consider replacing as preventative measure? Spark Plugs were done at 68,600 miles... air and cabin filters done with oil change at 81,600 miles so they should be ok (arguably, oil could be changed while in there).

I did see the following thread... gleaned some insights there which has me wondering given the mileage if the vacuum measurements are necessary given age/mileage: https://www.audiworld.com/forums/q5-...ed-pm-3013339/

Any advice or things to consider would be appreciated!

 

Just do it. It's incredibly easy on the 2.0T. At 90k, I think it is past due.

 

I have tried everything. New plugs and coil packs., new PCV valve, it uses a quart of oil every 400 miles, there’s 3-4 codes about banks being lean, it beeps and says pull over low oil pressure? It dies going down the road at 40 mile an hour just shuts off.???
I have done everything. I’m starting to think with all the oil burning. The Cadillac converter is clogged.?????

 

Parts on order. After inspecting the upper timing chain cover, there is a definite leak, although doesn't appear to be super bad. Will be replacing the gaskets in addition to the PCV Valve. Have not had any codes thrown. I might be getting lucky.

 

While replacing 2.0T PCV is another opportunity to install new spark plugs 👍