Got this from =>
http://www.turbodriven.com/en/turbofacts/r...mendations.aspxRecommendations for Servicing and CareWhat is good for a turbocharger?
The turbocharger is designed such that it will usually last as long as the engine. It does not require any special maintenance; and inspection is limited to a few periodic checks.
To ensure that the turbocharger's lifetime corresponds to that of the engine, the following engine manufacturer's service instructions must be strictly observed:
Oil change intervals
Oil filter system maintenance
Oil pressure control
Air filter system maintenance
What is bad for a turbocharger?90 % of all turbocharger failures are due to the following causes:
Penetration of foreign bodies into the turbine or the compressor
Dirt in the oil
Inadequate oil supply (oil pressure/filter system)
High exhaust gas temperatures (ignition system/injection system)
These failures can be avoided by regular maintenance. When maintaining the air filter system, for example, care should be taken that no tramp material gets into the turbocharger.
Failure diagnosisIf the engine does not operate properly, one should not assume that the turbocharger is the cause of failure. It often happens that fully functioning turbochargers are replaced even though the failure does not lie here, but with the engine.
Only after all these points have been checked should one check the turbocharger for faults. Since the turbocharger components are manufactured on high-precision machines to close tolerances and the wheels rotate up to 300,000 rpm, turbochargers should be inspected by qualified specialists only.
This post has been edited by akchang: Mar 27 2013, 08:16 AM