Related Clues:

• Crude, e.g.
• Something struck
• Crude stuff
• Monet work
• Source of the Getty fortune
• Painting medium
• Salad-dressing ingredient
• Engine fluid
• Smear with grease or mud, e.g.
• Indicator on a dashboard
• Standard product, once
• Lucky strike?
• It eases friction
• Squeak remover
• Smear on, as paint