Well, aside from being waaay off topic - I can confirm
that GM put diesels in cars. Couple of years later,
the gas-engine retrofit became a hot item in the after-
market world. They really stunk, 'cause GM used a gas
engine lower end, then re-pistoned and re-headed it.
The poor bottom end just couldn't take the (much) higher
compression of a diesel, and the diesel was junk. If
you want to hear owner DISloyalty, talk to a (probably
former) owner of a GM diesel.
Interestingly, the original VW Rabbit, Scirocco, and
Jetta engines (1.6, 1.7, and 1.8L) had the lower end of
the diesel, whether it was a diesel motor or not. Thus,
those engines held up okay. (I put 250K on my gas Jetta,
and it ran fine when I sold it.) VW also OEM'ed motors
to Volvo (the 1.6L diesel) and Chrysler (1.7L gas for the
Omni and Horizon).
...trivia from an old guy...