My car is a 10-year-old Saab 9-3 2.2TiD. On a recent journey it suddenly failed to accelerate and large clouds of smoke came out of the exhaust. I called the AA and they told me it looked as though the turbocharger had blown. I am calling a mechanic to fit a new one but am told that there may be other work to be done to ensure that a replacement turbocharger doesn't fail. I understand that you can advise on techniques to ensure that oil circulates properly in the turbocharger bearings.