clutch bearings need NO lube at all.

other bearings, I use LPS1 spray, it's a greasless silicon, or what is know as dry lube although it's a liquid. Ace Harware sells it in a can that will last forever for like $6. Size of a spray paint can and it's a light green colored can.

I use a cup I don't use to drink out of anymore and let the bearing soak overnight submerged in the dry lube.