Lower unit

Had my lower unit lube oil changed and they found a couple of very very small metal slivers.

Is this something to be concerned about-is my lower unit due to fail down the road. Its an older boat so
not sure I want to fix it or just run it till the lower unit gives out. I know its hard to say when something is
gonna give out-just looking for some educated guesses.

The motor is a 2004 40hp 2 stroke Johnson.

NO!

No its OK or no the clock is ticking.

All lower units are ticking time bombs.
Just run it. If you start having trouble getting it in gear . Change the oil again and if it loaded with metal shaving it probably time to rebuild.
Dont let the lower unit sit without oil.

Thanks for the info.