It's like the nostalgia for the 2 cycle, everybody wants to run them now, but back when they were actually a thing, anybody driving one wished the buyer had ordered the truck with a Cat or Cummins instead.
Fleets bought Detroit's because it cost roughly $2,000 less per unit, In those days it was all about
less weight and cheapness.
The reason a owner operator bought a Detroit was because he couldn't afford a Cummins or Cat,
back to cheapness.
In the 50's and 60's Detroit had 70 percent of engine sales for fleets. When the Big Cams and
1693's hit the market Detroit's percentage dropped to 50%. What really killed the on highway
leaker was the 8V92 00. Buy the time the Silver arrived the damage was done, Detroit's share
dropped to 20%. Then along came the Series 60 which paved the way for electronic and saved
Detroit.