UOA and failing PCV system

[Zero]

I've never had an oil analysis done before and I am a new Audi owner.

The Audi is a 2001 A4 Quattro 1.8T, this engine is prone to sludge largely because of a faulty PCV system as well as other engineering faults.

Anyhow, would a UOA show anything that would indicate my PCV lines are clogged or clogging? If so, what should I be looking for?

 

[zanzabar]

Possibly slightly elevated insolubles and oxidation/nitration? But not likely to be anything strong enough to diagnose it. I'm sorry to say your only option is to bite the bullet and do the PCV work and get your elbows greasy!

 

[JAG]

+1 to what Zanzabar said. I had my 1.8T PCV system replaced once due to being clogged and then cleaned the crud out myself the second time since the parts and labor was so expensive the first time. I used brake cleaner and Simple Green to clean the parts out.