Paragraph 6
The amount of any liquid additive or extender sent out from the premises —
(a)
as being suitable only as an additive or extender in fuel for one of the categories of engine described in subparagraphs (a) to (d) of paragraph 3 above; or
(b)
as a multi-fuel additive or extender; or
(c)
which is not entered in the fuel substitutes record under the preceding subparagraphs (a) and (b).