Process crude oil into a single product in specialized refineries. (Updated July 2018 for the latest 0.16.x)
Mods introducing new content into the game.
Things related to oil and other fluids.
i can't seem to add productivity modules to refineries, i had a look at the code and it should allow them i think, i may be wrong. Is this intentional i can add productivity modules to vanilla refineries, thanks
Thank you again John for reporting this. This is fixed in 1.3.2 which is released in a minute...