Hi Everybody, just another day with an Audi, a problem. I have a medium noise coming from the Steering Wheel when the car is warmed up and the RPM is between 1200-1800. No Foam is present in the Steering Fluid, but when you look at the fluid it moves and looks under a lot of pressure. Last time I changed the fluid was a 1-1/2 year ago. The problem is only persistent when you are at a stand point (car is not moving).