hamna vikipedia jameni? http://en.wikipedia.org/wiki/Octane_rating[/quote]


Thanks!

How many stations stock regular petrol by the way?

My understanding is that regular has lead in it..thus it pollutes the environment and is not good for health(esp if you want to become a father)?Thus we have unleaded premium to counter this pollution problem..Is there such a thing as leaded premium?I also read somewhere that cars made before 1988 cannot use unleaded fuel,is this the case?

...So which is the super and which is the regular? What are the costs for each? Can you be duped into getting regular instead of premium in a fuel station. How can you know? Pardon my ignorance!!!

There is unleaded regular and unleaded super. I have seen some places that stock unleaded regular - in fact that particular station I think was either in Mumias or Bungoma - and they had two pumps for unleaded regular (where all the boda bodas and taxis were queuing) and one for unleaded super - and one for diesel.

I disagree abt the assertion that leaded was meant for carburettor cars - I use unleaded on a carburettor car. The main thing (and I discovered this the hard way a while back) is that unleaded burns at a higher temperature and for cars pre-1980, the valve seats were designed for lower combustion. So a pre-1980 car had to have the valve seats replaced otherwise excess heat would over a period of time start to affect performance, cause the valve stems to stick, etc etc...

Caveat - but not ALL pre-1980 cars. Some manufacturers had the foresight to strengthen the valve seats...