Related Clues:

• SECOND PART OF 20
• Empty talk (colloq.)
• Vapour used as fuel
• eg Helium
• Circular assembly of jets used for cooking
• Helium, eg
• THIRD PART OF 23
• Hydrogen, eg
• Departs on the Spanish train
• Fuel for American state senate leader
• eg CO2
• eg Oxygen
• Petrol (USA)
• Fuel is needed to reverse slump
• Fuel; idle talk