Rails Liquid Depot

You can distribute various liquids through the Liquid Depot into and out of trains. Probably the most interesting liquid regarding trains is Engine Oil, which makes trains work and ride much faster.

The downside is that trains create toxic water while consuming the Engine Oil. The toxic water needs to be unloaded from trains through a Liquid Depot.

You can get rid of the toxic water in two ways: either purify the water using a Water Purifier or store it in barrels and disintegrate it in the Disintegrator.