I've personally seen the aftermath of two. One was a 77 300D that I bought that the previous owner blew up. The other was a VW Jetta TDI that the dealer did some turbo work on and then it ran away, and they blamed biodiesel. I've never seen one in person.

I've only read a few threads here were it actually happened to someone. Like stated above, when it happens it's catastrophic.

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