Title says it all.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
Things related to oil and other fluids.
Hey! Your mod is a nice cherry on top. What do you think about collaborating with this mod: https://mods.factorio.com/mod/flushable-fluid-wagons ? Or maybe implementing a similar fluid wagon GUI with temperature/volume info and a flush button?
