Yeah, at 80K that engine is barely broken in. They are known for doing about 400K miles and will match up with the legendary durability of the 616 617 diesels, though the valves will probably need some attention before the bottom end.

If it really is that low miles a ring could be stuck too.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.