Except that I wouldn't want mine to diesel when it is shut off. I recall it going through a period that it would run on back when it was a couple/few years old (and the 10.75:1 compression ratio was fresh). In addition to being annoying, I thought that jerking run-on can't be good for it. I don't recall how it was fixed. I may look back in the early service records to see.

I remember some cars back then could be shut off, locked and the engine would still be sputtering and coughing as you walked away.