Related Clues:

• Impetus
• Type of tank
• Balloon filler
• Pipe contents
• Juice
• Type of gas
• Brake's neighbor
• Gasohol, for example
• Neon or freon
• Electric's partner
• Laughing, for one
• Mustangs go nowhere without it
• It's often stepped on
• If you're in a hurry, step on this
• Grandiloquence