Have you got any details of the car N/A, turbo or tdi. If you have a thin oil in a high mileage engine you might want to change to something with thicker viscosity. I had quantra in my car and found it tappity and after a few thousand miles i changed it for gtx magnatec and it reduced it. Are you sure its because of oil as could easily be starter motor, exhaust, mounts or something else.
