I think a pyrometer should be mandatory on ANY late-model 5.9L Cummins because they ride the ragged edge of meltdown from the factory. 300+ HP of constant duty power from a 360 cubic inch engine is crazy.
Seriously, if your dad doesn't do a whole heck of a lot with it (towing hard for hours at a time), I wouldn't worry about it.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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