[Neil]

Even better register with HM Customs (or whatever they call themselves now) and legally produce your own bio diesel for about half the price on the forecourt. Leave dead dinosaurs alone and use a sustainable carbon zero fuel like vegetable oil converted to bio diesel. By burning forcourt dino-diesel you release CO2 back into the atmosphere that was taken out millions of years ago. When you burn bio diesel you release carbon that the next crop of rapeseed will take out again.
By the way it is easier to find someone else to make the bio diesel, pay the duty and get sticky, oily and yukky and just buy it from them.

I am just amazingly enviromentally friendly, anyway enough waffling from me I need to find a tree to hug.