Oil cap mayo

[H5NND]

have been checking my car since i bought it, and didnt think too much about the mayo on the underside of the oil filler cap. Typical Audi issue.

Just thought maybe the PCV ( i still need to check ), but i am getting quite a build up, i do only drive 12-14 miles per day round trip to and from work and felt this was due to the short runs and not getting totally up to temp oil wise.

I am slightly concerned tbh, anyone any experience with this.

 

[RKL]

It's a common thing with short journey's. Take it up the motorway for about 5-10 miles once a week should sort it out.

 

[H5NND]

I am getting quite a bit

 

[cliff81]

i have had Mayo problems for past 3 months, I have just cured it by changing all the pcv breathers/hoses/check valve ect the breather hose under the manifold had cracked and I'm guessing sucking in the cold air and moisture that I guess was causing my Mayo problem, I had a smoke test done and had no lesks but I removed every pcv hose/pipes and the metal pipe from rocker to T hose and it was severely blocked it has a horrible 90degree bend. Fresh oil again and touch wood its stayed away so far. 1.8T awt.

 

[H5NND]

Yeah I have had similar with many many BMWs, and usually the ccv same thing, the Audi looks a piece oh **** compared to them

 

[cliff81]

Only headache I had was trying to get the new breather pipe and new seal back in took me about 1hr as space is very tight some people remove the manifold.
http://pages.ebay.com/link/?nav=item.view&alt=web&id=191186254270

 

[H5NND]

Lol sounds just like the M54 block, done many

 

[H5NND]

are the 1.8t and 3.0 pipes the same, as mines is the 3.0.

 

[H5NND]

does anyone know if the pipes are tied into the dipstick just like the BMW engines.

 

[demus]

12 miles a day is your answer..

 

[H5NND]

thanks guys, but would a clogged/knackered pvc also cause this, i have no idle issues nor any others but i was going to check the pcv also and all the hoses its a similar issue with BMWs.

 

[Jon a4 3.0]

I have a 3.0 and experienced the same. I renewed pcv black plastic valve at the rear of inlet manifold under plastic engine cover my breather pipe checked out ok
I would suggest taking car for long spirited drive then change the oil and filter while hot. Use good quality fully synthetic. About 6.25 litres.
I do similar short journeys and I have not had the Prob return since doing oil change etc.