Which risk is amplified following a turbocharger oil supply failure in a diesel engine?

💡 Explanation

When oil supply to the turbocharger fails, lubrication ceases and bearing friction drastically increases, causing rotational speed fluctuations that lead to unsteady airflow which generates compressor surge. Therefore surge probability greatly increases, rather than valve cracking, intercooler icing, or bearing instability, which are effects of different failure modes.

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