I had the trusty 4.0L I-6 in my '89 Cherokee. 160k miles on it when it was sold to the next owner (local garages didn't want to touch it/wanted to fix way more

I had the trusty 4.0L I-6 in my '89 Cherokee. 160k miles on it when it was sold to the next owner (local garages didn't want to touch it/wanted to fix way more than needed and I was too far for regular visits to my dad's garage; it now does offroading stuff with the new owner). My dad has seen these go to 285k before the (original) transmission gave up (which retired the engine too). Over 300k was also reported. Of course, upkeep among mechanics is also likely of higher quality too. Alas, AMC is no more and Chrysler ruined their engines out of jealousy (at least that's my dad's view on it).