“Was that the stupid 4/6/8 engine that turned off cylinders to save fuel?”
It could be. On the other hand it could be the gas engine block they converted to diesel.
Olds 350 converted. There were some differences in the block casting just not enough in the rest.
Cadillac made so many disasters back then, tarnished their image till this day
I believe Oldsmobile had a diesel out as well that sucked.