i got a question...
now i dont know much about refining petrol, but as far as i know diesel is a by-product of petrol production and you need to make petrol to produce diesel...
so if every one starts driving diesels then the leftover petrol should be come cheaper then diesel because there will be less demand...
now if you consider a diesel is only marginally cheaper to run because maintenance costs are higher...
then petrol might be the way to go :rollsmile: (if im right about the production)