That just it, Turbos have an indefinite service life highly dependent upon their treatment.
Look after them and (normally) theyll look atter you. High quality oil, regular servicing (ideally without extended oci's), let them slow and cool before switching off, dont labour diesels clogging them up with extra carbon, and so-on...
Sometimes the manufacturers themselves compromise turbos simply by design, which isnt a good start. Take the psa 1.6hdi for example.
Then on the other hand, you can get a crap turbo that dies anyway, like anything in life really.
Last edited by AndyV7o; Aug 19th, 2018 at 10:53.
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