Possible Clues:

• Lubricating
• Crude gin cocktail makes things go like clockwork
• 'O, I fish to make things go smoothly (6)'
• Conditioning, as a bamboo cutting board
• Ten up with the fish to make things go smoothly
• With nil up, I go around it with a can
• Mechanic's job, at times
• How I go around nil up here to stop the squeak
• Conditioning, as a baseball mitt
• Working topless while applying lubricant