Detroit 12.7 care and maintenance

[Waterloo]

Run the overhead, it is about that time after the in frame. Other than that, just regular maintenance. Use some gear lube when you change the oil. Turbo boost gauge and Pyrometer/EGT gauge, install if you do not already have them.

I would check the driveline, the u-joints in particular. Make sure they take grease and are not loosey goosey. I would go over the electrical system too, start at the battery box, inspect the cables, if they look like the original cables, may be something to replace before winter, they get green and loose efficiency. Same with the headlight wiring, old wiring, the lights will not work that great. Starter too... If original I would replace.

I would go over the rear suspension too, check the bushings and torque rods.

Fifth wheel, if original, I would replace.

Others will chime in, sounds like a good truck. Take care of it, and it will take care of you.