GDIW_Bergius is a mash-up of two of my favorite Factorio Mods: GDIW and Bergius Process.
Bergius process creates receipes to transform coal into oil products (gas, medium, and heavy).
GDIW creates "mirror" recipes for oil production. There are recipes that reverse inputs (eg. water and crude oil for advanced oil processing) and also outputs (eg. gas, medium, and heavy oils). This mod is extremely useful for high density oil reinfining.
GDIW_Bergius brings "mirror" recipes to Bergius Process. It's nothing fancy just some extra recipes with clear icons.
Note that this mod does not replace either GDIW or Bergius Process. You'll need to install both mods.
When choosing a recipe in Factorio, the icon that appears in "detail mode" (ALT button) does not rotate with the building. This is a Factorio limitation.
GDIW_Bergius can be safely added to an existing save.
Better screenshots and more details at https://github.com/fandingo/GDIW_Bergius