Possible Clues:

• Craft over Niagara Falls?
• Quantity of oil arrived in sound measure
• Tube on a gun
• Revolving drum
• Beer container almost dry — add litres?
• To make mistakes in research site over of all things - VAT
• Go like lightning
• Pub encounters ordeal regularly finding keg
• Place to get drinks by river -- the Spanish beer's found in this?
• Relative seen behind counter gets keg