Related Clues:

• __ drum
• Crude in a gusher
• OPEC product
• Wildcatter's strike
• Nitrogen, e.g.
• Fuel for some ranges
• Service-station buy
• What you might get with a bean burrito
• "There Will Be Blood" focus
• Convenience store buy
• Refinery flow
• Empty words
• Driving demand
• Biggest export of 99-Down
• The Da Vinci coat?