Related Clues:

• Gas-station freebie
• Hopefully, it's fresh
• Bubble contents
• Plane peril, ___ piracy
• Refrain
• What you breathe
• It's in circulation
• Hole in a vending machine
• Plane's place
• Coin destination, sometimes
• Type of current
• Space shuttle supply
• Gas station freebie
• Vegas staple
• Pocket contents?