unleaded
in petrol we have 2 types.they are 1.leaded petrol 2.unleaded petrol in leaded petrol we have lead compounds so we call it as leaded petrol. in unleaded petrol we do not have lead compounds. the use or advantage of unleaded petrol is it does not emit harmful gases in to the environment. but leaded petrol emits harmful gases. cracking process takes place in unleaded petrol. cracking means it is a process of converting harmful gases into harmless gases. but this cracking process cannot be done in leaded petrol bcoz lead compounds decomposes the catylsts used in cracking process
It can effect engine performance and fuel burning efficiency.
The valves, particularly the exhaust valves, will become damaged quite quickly
Unleaded Premium
I don't think there is a way to visually tell the difference between leaded and unleaded fuel. However, leaded gasoline has become "extinct" and it is more likely that you have unleaded gasoline in the can.
leaded gas has lead in it, unleaded does not Leaded petrol (or gas as you Americans quaintly call it) contained a chemical called Lead Tetraethyl to improve its performance. It was then discovered that the amount of lead given out by cars (or automobiles) was making city air dangerous to breathe and so its use has been forbidden. All petrol/gas is now unleaded and "green". Car engines have needed to be redesigned to allow them to burn the unleaded fuel.
1998 I think you mean what year did unleaded petrol start in Britain.
Unleaded, most vehicles manufactured post 1983, particularly Japanese are made to run on Unleaded
In the UK, the most common petrol types are: Ordinary unleaded - 95 RON Super unleaded - 98 RON Leaded Four Star - 98 RON
unless im mistaken they havent used leaded fuel since at the latest the 60's...
leaded fuel is economic compared to unleaded because more distance is covered with leaded than unleaded