Adds functionality and a locomotive for using fluids as fuel. Can use heavy oil, light oil, or diesel (if added by another mod), or all three. Configurable in Settings -> Mod Settings. (I am no longer playing this game or supporting this mod. I see someone else made a successor, though: https://mods.factorio.com/mod/dieselTrains)
Adds a couple advanced recipes that allows converting of wood into oil products. Uses all vanilla items & fluids; no custom items or fluids added that need new chains to deal with. Does have some basis in reality. Can optionally be used along side the existing Wood gasification mod. (I am no longer playing this game or supporting my mods. Sorry.)
Changes which fluids sulfur production uses and balances the efficiency of them towards heavy oil. By itself on Factorio 0.17.60 or later, it merely adds options to produce sulfur from heavy & light oil, with heavy oil having the best efficiency and petroleum gas the worst. When used in conjunction with the 'Pre 0.17.60 Oil' mod, it makes it so sulfur production comes exclusively from heavy oil (with a setting to enable light and gas). Concept is to move uses of the oil byproduct fluids around so the system is less demanding on petroleum gas and gives outlets for everything else. (I am no longer playing this game or supporting my mods. Sorry.)
Following the FFF304 discussions, takes ideas from a few people and rebalances oil production a little. Primary change is to change Basic Oil Processing to output only Heavy oil and Petroleum Gas. See the full description on the mod portal for full details.