Originally Posted by lotsofmagnets

will is right on the mark. the diesel engine was originally designed to be run on anything that will combust and biofuels work just as well as diesel, at least on the vast majority of engines. when the price of petrol 1st started to skyrocket mebe 5-6 years ago i did a lot of research into biofuels and back then it was possible to manufacture it yourself (it is a bit of a hassle) for less than 1/2 the price of diesel fuel. now with the price of oil it will be less than 1/3 of diesel. this gets added to the fuel consumption benefits of a diesel (fuel efficiency is directly related to compression ratio and while petrol powered cars run 8.5-11 to 1 diesels run around 22:1 which means near twice as efficient as the equivalent petrol engine.)