Used Lubricating Oil (Re-Refining) 75. Mr. Harold Davies asked the Minister of Fuel and Power to what extent the saving or salvaging of used lubricating oil is being carried out in Britain; and what publicity is being given to this re-refining of used lubricating oil. Mr. Shinwell No information is available as to the quantity of used lubricating oil that is re-refined in this country but, considerable publicity has been given to the need for re-refining, and if my hon. Friend knows of any firm which desires to dispose of appreciable quantities of such oil, I shall be glad to furnish him with a list of firms undertaking re-refining.