My 2001 Audi A6 2.7 t is leaking oil, and I suspect the turbo oil line.I have found oil in the diverter valves. Do I need to replace the entire turbocharger? If not, how much shouldI expect a shop to charge me?
Thank you for your time and help.

 

A turbo oil line, will not put oil in the DV's! That's usually the PVC system that blows oil into the intake. That cause can be over filling the engine oil, or a bad PVC system.

More then likely, your valve cover gasket is leaking oil on the turbo, &/or the cam seals, it's very common.

The PVC system, just needs to be replaced, it's the thing that sticks to the side of the Y pipe

 

2kS4,Are you referring to 1.8 or 2.7 engine? There is not known for a pcv system to be presented on 2.7. If you have a proof for pcv on 2.7, please share the information-photo or schematics.

 

Like i said before, audi doesn't refer the PCV system as such, its called something else. If you really want to identify it correctly you must go to the dealer and point out the parts on ETKA and the common name used for the parts will be listed. The PCV valve (on the Y pipe) won't be called a PCV valve on ETKA, but it will be on the diagram.
Un-less 2kS4 has something else to add, which would be great.

 

Call it what you want, it's the one way valve & breather system that is attached to the SIDE OF THE Y PIPE. It will blow oil into the intake track. Open your hood, look at your Y pipe, the part that sticks out the side on the drivers side & attaches to a black plastic round thing, that's what I'm talking about.

 

On a turbocharged car its not uncommon for there to be some oil in the intake even with a properly functioning system. However if you think you have somesort of pcv malfunction you can try replacing the valve connected to the y pipe as mentioned above.

 

Is there a procedure to test the pcv-breather crankcase ventilation on 2.7?
(pressure regulating valve (the "puck" item), the suction pump (if any))?