Related Clues:

• ''Crude'' fuel
• Product of a field of dreams?
• Gallery hanging
• Spill stuff
• Business for Shell or ExxonMobil
• Manet's "The Luncheon on the Grass," e.g.
• Covering for some wrestlers
• ''Black gold''
• Permian Basin yield
• Cargo of the Valdez
• Pumpjack output
• Jed's find
• Peak ___
• Garage fluid
• Crankcase fluid