Related Clues:

• Station identification?
• Crew leader, for short
• Power, so to speak
• Antiknock rating
• Watergate prosecutor
• Crew leader, briefly
• It prevents knocks
• "Stroke!" shouter, for short
• Gasoline rating number
• Motor fuel rating
• Pump stat
• ''Friends'' star
• Pump measure
• ___ rating
• 87 or 91, at the pump