Watching “ Smiling Larry” of Midway, he wets his fingers with oil and rubs the internals and springs with those fingers.
I think that’s a good program.
A little of good lube goes a long ways
If it slides>>>Grease it If it turns>>>Oil it.
Except for break-action shotguns where it is the opposite.
There has never been anything wrong with lubing S&W guns, revolvers or semiautomatics, exactly the way they say to do it in their owner's manuals. If you don't have a manual for your gun, get it from S&W and read it.
BTW, it's oil...
I grease the internals more than use oil. Oil drips out.
Yoke, the pins, and on the sides of the rebound slide. Grease. I prefer boron nitride grease.
Light coat of oil everywhere else.
Except for break-action shotguns where it is the opposite.