Which is refined more easily from heavy sour oil?
Is the difference in price due to refinery costs at current mix volumes?
Will the price gap become greater?
Of course, I am aware that current cars get about 10 mpg more from diesel.
The reason for my questions is that I am trying to advise people who want to buy a second hand car. And yes they do need to change their current 9 year old machine. And no they can't do without a car currently.
Thanks in anticipation.
