Related Clues:

• Lube
• Paint base, sometimes
• Farmer's purchase
• 'Black gold'
• 3-IN-ONE, e.g.
• Parakeet treat
• Vinaigrette ingedient
• Bird-feeder food
• Auto fluid
• De-squeak
• ''Lorenzo's ___'' (1992)
• __ and vinegar
• Upton Sinclair novel that inspired 'There Will Be Blood'
• Chipmunk's morsel
• Burpee bit