He said that people have the impression that, if they switch to unleaded petrol, they cannot switch back to leaded petrol.
There should be no difference in emissions, other than of lead, between non-catalyst vehicles running on leaded or unleaded petrol.
No estimates of the number of lorries using unleaded and leaded petrol are available.
These are low octane unleaded petrol, high octane unleaded petrol, which is considerably more expensive, and the old type of leaded petrol.
We have a different tax rate for leaded and unleaded petrol.
Other motoring taxes include duties on petrol, both leaded and unleaded, and diesel.
During the 1980s there was a steady transition from cars designed to use leaded petrol to those capable of using unleaded petrol.
There is no evidence to suggest that the severity of these fires is dependent on whether the fuel is leaded or unleaded.
