Related Clues:

• Boat maneuverer
• Bygone brand on U.S. highways
• Pole with a blade
• Mobil rival of old
• Gulf competitor
• Infamous Spandau prison inmate
• Propel a boat
• Propel, in a way
• Rockefeller's company
• Predecessor of Exxon
• Skiff tool
• Humble Oil gasoline brand
• Wave maker
• Bygone U.S. gas name
• Bygone gasoline brand