Related Clues:
- Crude
- Black gold
- Slang for 55-Across
- Oil, informally
- Oil, to Jed Clampett
- Crude, à la 'The Beverly Hillbillies'
- Oil, slangily
- Petroleum
- Color + color = oil
- ''Black gold''
- Crude, slangily
- Drink made with tequila, rum, vodka, gin, bourbon, triple sec, sweet-and-sour mix and Coke
- Crude from a well, slangily
- Jed Clampett's discovery, in a sitcom theme song
- Ban on precious metal and oil