I have this can of Super Lube, Dri Film Lubricant.
It is for everything from musical instruments, to ball bearings, to roller skates, to industrial grade machines…
It says it is a self cleaning lube, that cleans as it lubricates. It provides a polymer film, and a dust rejecting shield. It seems more than suffice for a ball bearing yoyo, what are your thoughts.
Note- this is not WD-40!
Trumpet valve oil
Alternatives to lube:
After a thorough cleaning, using acetone as the last step, I highly recommend Terrapin X’s Dry Play treatment.