Related Clues:

• Ballpark
• Like oil directly from a well
• Unrefined oil
• Unrefined cargo
• Not correct
• Oil directly from a well
• Well-made product?
• Oil refinery input
• Not precise, ambiguous
• Not precise, like some sciences
• Coarse and unrefined
• Not precise, approximate
• Tasteless, not refined
• Not refined, say oil
• Not refined, like oil