Related Clues:

• Hangings at The Frick
• Masseur supplies
• Some museum hangings
• Art medium
• Turns cod into bacalao
• Palette choices
• 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
• Preserves, in a way