The refinery can be set to automatically transfer fuel to refuelers, while a "reoiler" automatically refills oil in the refinery to keep the process going.
Sell excess minerals from the mines to buy rare parts or fuel from Joe at the Junkyard.
Once unlocked at Level 4, these remove the need for manual watering.
You can automate the transfer of items from mine cars to the elevator simply by pushing the car, streamlining your mineral collection.