Drivetrain noise

[imalumberjack]

When I first started trucking many years ago .... had an issue and I asked this old guy, he owned a truck salvage yard and he was pretty smart, his advice was "keep running it, it will let you know where the problem is" basically he said it needed a little more time, or wear? What I would always do is make sure it wasn't a safety issue (wheels falling off) or something that was gunna get expensive fast? but keep listening and let it manifest or be a ghost symptom?