[KGIII]

Usually, but not always.

https://en.m.wikipedia.org/wiki/Two-stroke_diesel_engine

[userbinator]

I'd bet most people in the US over ~20 or so have heard the sound of, or ridden in, a vehicle with a 2-stroke diesel:

https://www.youtube.com/watch?v=XfI6ipuPQQE

[TheSpiceIsLife]

That one, the 6V92TA, does the 'TA' imply it's Turbo Aspirated?

Those things sound amazing. And oh so dirty!