Dirty oil damages the turbocharger by causing heavy scoring of critical bearing surfaces.

To avoid damage, oil and filters should be of a quality recomended by the engine manufacturer. These should be changed when a new turbocharger is fitted and at regular intervals according to the vehicle/engine manufacturers specification.

Dirty oil damage could result from:

   Blocked, damaged or poor quality oil filter
   Dirt introduced during servicing
   Engine wear or manufacturing debris
   Malfunctioning oil filter by-pass valve
   Degraded lubrication oil.

Dirt scored shaft                              Dirt scored bearing