What would have caused the fire in my MINI?

I was driving recently when my 2007 MINI Clubman caught fire. It had had a new diesel engine fitted over the summer after the previous engine suffered a persistent oil leak. It had also had a recent service. Any idea what the cause of the fire may have been? The insurance company will not investigate as the damage is too severe.

Asked on 2 November 2018 by David Baker

Answered by Honest John
Probably the oil feed pipe to the turbo bearing came off because the oil return pipe was blocked with carbon. Hot oil spraying onto a red hot turbo is the most likely reason for the fire.
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