Related Clues:

• Cruet contents
• OPEC concern
• Cruet filler
• Drilling target
• Half of half-and-half
• Loosen, in a way
• Painter's medium
• See 71-Across
• Crankcase contents
• Heat source
• Certain cartel's concern
• Well-supplied resource?
• Barrel contents
• Peanut product
• Black gold