Related Clues:

• Locker-room supply
• Hotel guests' needs
• Does routine engine maintenance
• Stops squeaking
• Rembrandt's output
• Tends to a squeak
• Some are essential
• Rembrandt's medium
• Greases
• Reduces friction, in a way
• Met works
• Bathwater additives
• They hang around locker rooms
• Artist's medium
• Manet medium