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A common problem encountered with turbocharger operations is the “turbocharger oil leak”. Often the assumption is made that the turbo is at fault. This can cause unnecessary maintenance to be performed. In many cases the “oil leak” is not a turbo problem-rather it is caused by either improper turbo installation or engine maintenance. To fully understand what causes a turbocharger to leak oil and how to prevent it, we will cover:

  • Oil inside the turbocharger
  • Seals
  • Check Valves
  • Leaks at the compressor outlet
  • Leaks at the turbine outlet
  • Engine breathers

Download (PDF) this extensive article with diagrams

The technical information presented on this website is for use only to aid properly qualified persons in the maintenance of the equipment covered within and in no way whatsoever replaces or changes the appropriate airframe, engine or turbocharger manufacturer’s service publications for the proper procedures on any maintenance performed. All information is furnished solely as a helpful reference and is based on information available to Approved Turbo Components, Inc.