Related Clues:

• Pump purchase
• 82-Down, e.g.
• Tank fill
• Fuel
• 'Noble' element
• Car fluid
• Burner fuel
• Explorer's need
• With 40-Down, H+, e.g.
• Beat one's gums
• Fun time
• Car fuel
• Highway sign word
• It's in a certain range
• It may be noble