YUP: pretty much voted as the worst engine ever made .
i overhauled dozens of them , the major weak link was head gaskets, and fuel pumps!
1st a good diesel should have hi-quality cast iron, blocks and heads, more head bolts/studs, o ring cylinder bores. etc.
after a few years of manufacture they GM finally got it right, with much reengineering, new grade cast iron, forged pistons, really good steel piston rings, floating pins, steel cranks, upgraded roller cam followers, steel cams, all to late.
BUT then the law suits were showing up(lets face it who buys OLDS /Cadillacs money people). so put a class action suit(California DUH!) the amount was so hi GM only way out was to stop manufacture NOW!. go bankrupt in the Diesel division!
OK the good part was not HP but very good MPG gallon, i owned a few cars, olds /cadillac, got 35 MPG US gallon,in a big sedan CADILLAC. me driving. sometimes close to 40 mpg.
now why all this BS , you ask the question why did GM build them, NOBODY IN THE DIESEL CAR INDUSTRY, could or would make diesel car with the engine option of $800. USD, over a gas engine!
and something never talked about that was the 1st wave of college engineers fresh out of the famous drug LSD era!!! doing design engineering for a totally unrealistic plan ,(converting a V8 gasoline engine into a DIESEL.
in the end i started doing gas lumps , and tossing a bunch of engines in the corner, that i sold to a guy from ENGLAND!
wigs ? whats a P6 car??? and how much for the 215 Buick/Rovers, and wonder what shipping would cost!
i maybe off on a different tangent!
i also bought a lot of used diesels from UK , Perkins mostly, cheap, that i rebuilt and sold!