HC Deb 03 June 1981 vol 5 c371W
32. Mr. Skeet

asked the Secretary of State for Transport what will be the effect of the use of lead free petrol on cars currently used on roads in the United Kingdom; and if he will make a statement.

Mr. Fowler

It would cause severe engine damage. The vast majority of such cars have been designed to run on high-octane leaded petrol and are not suitable for use with unleaded fuel.