Hi there,
My wife's car, started to sound like a diesel. I took of the valve covers and realized that the cylinder bank on the drivers side did not have the right oil pressure (almost none). I took the car to the local Audi dealer and they changed the oil retation valves. After 1200 $ later, the car has still not enough oil pressure and still sounds like a diesel!
Any idea's or suggestions???

Thanks in advance
Frank