I’ve got a 6.0 that had most if the 6.0 stuff done at 100k miles. It’s at 183k miles now with no issues since. It’s mostly a run around truck, but routinely sees trailers with tractors, skid steers, loaded stock trailers, etc.

Bro in law has one as well, basically same mileage. His sees as much trailer duty as It does empty. He replaced the HPOP and had a local computer shop resolder his FICM and that’s about all he’s done to it drive train wise.

We both routinely do 500-1,000 mile one way trips.

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