During a brake job, the technician finds the wheel bearing grease is gray/metallic and the rollers show pitting and spalling. The correct action is to:

1. Wipe the rollers and reinstall with the old grease
2. Replace the bearings and seal, clean the hub thoroughly, and repack/refill with the specified lubricant
3. Add fresh grease over the old grease
4. Ignore minor pitting if there is no noise yet