Related Clues:

• Shell asset
• Oiler's equipment
• Hauler on the highway
• Prefix for detached
• Derrick
• Big roller
• Oil company facility
• Prefix for automatic
• Road hog, at times
• Tournament game
• Prefix meaning ''half''
• Convoy unit
• Truck type
• Rig on the road
• It's in for the long haul