Any anger on discussions of engine reliability should be directed to the true source - government.

Diesel reliability has gone down and maintenance costs up because the complete engine system is now ten times more complicated.

If Roger Penske could not sort out the problems of VM Motori diesels,
who could?

My two younger brothers struggle daily with today’s diesels.
Both, engineering grads,
both PE’s,
and both have watched diesel engines
of Cat, Cummins, Detroit, EMD, Kubota, Perkins, VW, Volvo
makes change for the worse since the 1970s.

If you used Deutz air cooled diesel trash pumps in the 1980s
and have to troubleshoot and repair today’s diesels
your brain will constantly be subconsciously angry.