Related Clues:

• Type of stove
• Balloon content
• Truck-stop purchase
• Nitrogen or oxygen
• Word repeated in "Jumpin' Jack Flash"
• Sign along an interstate
• Vacation expense, maybe
• One of the states of matter
• Helium or hydrogen
• Service-station commodity
• One of the three states of matter
• Ford filler
• Fuel at the pump
• Car tankful
• It makes the van go