HC Deb 07 March 1966 vol 725 cc448-9W
Mr. John Page

asked the Minister of Transport whether she is aware of an additive to fuel for diesel engines, the name of which has been supplied to her, whose purpose is to reduce diesel exhaust fumes; whether, in view of the nuisance currently caused by excessive diesel fumes, she will instruct her research department to carry out tests on this additive; and whether she will report the results to the House.

Mr. Swingler

I know of this and similar additives to fuel for diesel engines and of the claims made for them. We have evidence from tests carried out by the oil companies and others that they appear to have some value as smoke suppressants, although they may add significantly to fuel costs. Such additives are not a substitute for proper maintenance.