Rework of fuel values in order to keep them constant between recipes. It is made with the assumption that recipes converting between fuels do not add energy into the material and that chemical processes (that is oil cracking and coal liquefaction) comes with an energy loss of 20%. Other recipes, such as rocket and nuclear fuel maintain the input energy amount. Beside these it treates solid fuel made from light oil as 100% correct, and derives other recipes from that.
Small changes concerning balance, gameplay, or graphics.