I gotta say, my first diesel was a 95 7.3, I bought it from my friend who was gonna trade it in for a 6.0, he bought it new so I knew its heritage. I got it just shy of 100,000 miles, one owner and 10 days later had to put glow plugs in it, then a total of three water pumps, two injectors, two sets of injector O rings, one set went in kitwanga bc, and the tow bill to terrace was huge. An alternator and three belts after stripping the rear rib off the belt and chewing the hood insulation up, shimmed the power steering pump and cured that. The dual mass flywheel went south, so in went a luc conversion which my tranny guy told me would eat the input shaft in the tranny, yep, you guessed it, new tranny a year later.
The end was leaking O rings all over the engine, all this within 100,000 km's (60,000 miles) sold it, bought an 07 duramax, ten years ago, zero issues yet with 225,000 on the clock.
However, there isn't a duramax made that makes the sweet sound of a 7.3.