§ 2. Mr. Burden
asked the Minister of Supply how far the same tests and principles are applied to lubricating oils from all sources when approval is being considered by his Advisory Panel on heavy duty engine oils.
§ The Minister of Supply (Mr. Reginald Maudling)
The same tests and principles are applied by the Advisory Panel to all oils tested irrespective of the source of supply.
§ Mr. Burden
Will my right hon. Friend give an undertaking that if there are new sources of supply this procedure will be followed in exactly the same way?