
In the game Factorio, players construct and manage factories. A fluid wagon, also known as a rail tanker, is a type of rail vehicle with multiple tanks that can hold fuel, oil, and water. Pumps are required to load and unload fluids from fluid wagons. To remove fuel from a train, some players have suggested using filter inserters, but others have noted that inserters do not remove fuel from locomotives. Instead, they remove burnt fuel, such as used uranium fuel cells. Players can also manually refuel trains by clicking on the train to bring up the train stop menu and inserting fuel into the engine.
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What You'll Learn

Using a fluid wagon to transport fuel
A fluid wagon, also known as a rail tanker, is a type of train car in Factorio that can be used to transport fluids such as fuel, oil, and water. It is equipped with multiple tanks, each of which can hold a different type of fluid. Each tank has a maximum fluid capacity of 25,000 units, allowing a fully loaded fluid wagon to carry up to 150,000 units of fluid.
To use a fluid wagon for fuel transportation, follow these steps:
- Positioning: Ensure that the fluid wagon is precisely positioned at the loading station. The arrows on the pumps should point towards the loading direction and away from unloading, with the pumps placed directly next to the rail.
- Connecting Tanks: Place a tank two tiles away from the fluid wagon. This tank will be used for transferring fluid to and from the wagon.
- Loading Fluid: Use a single pump to transfer the desired amount of fuel from the tank to the fluid wagon. You can have up to three pumps connected to a fluid wagon, with one pump for each tank section.
- Setting Up Pumps: When selecting a recipe that requires fuel, the assembly machine will display a fluid output or inlet. Use this information to position the pumps appropriately for loading and unloading fuel from the fluid wagon.
- Multiple Fluids: If you intend to transport multiple types of fluid, divide the different fluids among the tanks in the fluid wagon. Understand the pumps' flow rate limitations and place tanks near the pumps to accelerate the fill rate.
- Unloading Fluid: To unload the fuel, stop the fluid wagon at the unloading station and use pumps to transfer the fuel from the wagon to the desired location, such as storage tanks or another vehicle.
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Inserters and fuel removal
In the popular strategy game Factorio, players construct and manage factories, automating processes to optimise their operations. One such process is refuelling trains, which can be done manually or automatically.
Inserters are a key component of automation in Factorio, and they can be used to load fuel into trains. However, there is some debate about whether inserters can also remove fuel from trains. Some players suggest that inserters used to be able to unload fuel from locomotives but that this feature was removed due to "contamination problems". This problem occurs when fuel is unloaded from a moving train onto a belt-based station, causing the fuel to spill.
To address this issue, players can implement a "solid fuel load into [a] cargo wagon" station, where the train stops and unloads fuel without causing contamination. Additionally, it is suggested that filter inserters could be used to automate the process of switching between fuel types, removing the old fuel and refilling with the new type. This would improve efficiency and reduce the need for manual intervention.
Another suggestion is to utilise a fuel train, where wagons of fuel are placed in front of the locomotive. Inserters can then be set up at the station to load and unload fuel from the train's storage, ensuring a constant supply of fuel for the locomotive. This method requires a two-car train setup but can help maintain consistent fuel levels.
While the removal of fuel from locomotives by inserters is a debated topic, players can employ creative solutions, such as those mentioned above, to manage their train's fuel levels effectively.
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Fuel contamination problems
In Factorio, a fluid wagon, also known as a rail tanker, is a type of rail vehicle with multiple tanks designed to transport fluids such as fuel, oil, and water. Each fluid wagon can hold up to six tanks, and each tank can hold a different type of fluid. To efficiently manage fuel in your factory, you must understand how to address fuel contamination issues.
One common problem is the contamination of fuel tanks with the wrong type of fuel. This can occur when switching between fuel types, as inserters do not remove old fuel from trains. While filter inserters can automate the process of replacing old fuel, they do not remove the previous fuel type, leading to contamination. To avoid this, players suggest setting up a fuel train with wagons of fuel and using inserters to load and unload fuel from the station's fuel storage. This method ensures that the locomotives themselves do not need to store fuel, reducing the risk of contamination.
Another issue arises when half-used fuel items are left in locomotives, causing disruptions. To prevent this, some players suggest removing fuel from the locomotive's fuel slots while leaving a small amount for the locomotive to consume before switching to a new fuel type. This approach maintains efficiency while reducing the risk of contamination from residual fuel.
Additionally, when using fluid wagons, precise positioning is crucial for attaching pumps to load and unload fluids. The arrows on the pumps should point in the direction of loading and away from unloading, positioned directly next to the rail. Inaccurate positioning can lead to difficulties in removing fluids, potentially resulting in contamination if the wrong fluids are loaded into the tanks.
To summarize, fuel contamination problems in Factorio can be mitigated by using dedicated fuel trains, strategic inserter setups, and careful management of half-used fuel items. Proper positioning of fluid wagons and pumps is also essential to ensure efficient fluid loading and unloading, reducing the risk of accidental contamination.
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Fuel storage at train stations
In Factorio, a fluid wagon, also known as a rail tanker, is a type of rail vehicle used to transport fluids such as fuel, oil, and water. Each fluid wagon can hold up to six tanks, with each tank capable of storing a different type of fluid. To efficiently manage fuel storage and transportation in your train station, consider implementing the following strategies:
Fuel Storage Setup
Designate a specific area within your train station as the fuel storage area. This area should be easily accessible by trains and have enough capacity to store sufficient fuel for your operations.
Utilize Pumps and Inserters
Pumps are essential for loading and unloading fuel from fluid wagons. Ensure that the pumps are positioned correctly, with the arrows pointing in the direction of loading and unloading. You can connect up to three pumps to each fluid wagon, with each pump corresponding to a specific tank section. Additionally, use inserters to automate the process of transferring fuel between the fuel storage and the trains.
Implement a Refueling Strategy
Establish a dedicated refuelling station for your trains. When a train's fuel level is low, it can add this station as a temporary stop on its schedule and refuel as needed. You can also set up a "Train fuel load" stop near your fuel production area and multiple \"Train fuel unload\" stops at your train stations. This allows for efficient distribution of fuel to your trains.
Optimize Train Routes
Optimize your train routes to include a fuel train stop just after the unloading train stops. This way, the trains can be refuelled while they are stopped, without needing to make a separate trip to a refuelling station. You can use inserters and chests at the fuel train stop to unload fuel from the fuel train and load it onto the waiting trains.
Monitor Fuel Levels
To ensure your trains don't run out of fuel unexpectedly, consider using mods that allow you to monitor fuel levels. These mods can help you track the fuel levels of your trains and trigger refuelling stops when fuel is low.
By following these strategies, you can effectively manage fuel storage and refuelling at your train stations, ensuring smooth and efficient operations in your Factorio game.
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Fuel types and their impact on acceleration
In Factorio, a fluid wagon or rail tanker is a specific type of rail vehicle that can hold various substances, including fuel, in its tanks. The game also features a fuel acceleration bonus, which means that the more powerful the fuel, the faster the locomotive's acceleration and top speed.
The most common fuel type is burner fuel. Coal is a basic fuel source, with a fuel acceleration bonus of 1.0. Solid fuel is a slight improvement on coal, but it requires advanced oil processing, so there is little point in switching to it. Rocket fuel provides a significant boost to acceleration (+80%) and top speed (+15%), and players should switch to it as soon as possible. Nuclear fuel provides the highest energy density and vehicle bonuses of all fuel types, with an acceleration bonus of 250% and a top speed bonus of 15%. However, one user states that they tend to use their uranium for other purposes.
Some players opt to use a fuel train, dedicating an entire train to transporting fuel, to ensure their locomotives never run out of fuel. This can be achieved by setting up inserters to load and unload fuel from the station fuel storage. Another option is to use a double-headed train, with a loader setup at one end and a transfer setup between the locomotives.
Players can also transport fuel using fluid wagons. Pumps are required to load and unload fluids from these wagons, and up to three pumps can be connected to each wagon. To establish a loading station, players must stop the fluid wagon at the station and place a tank two tiles away, then transfer the fluid using a pump.
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Frequently asked questions
To remove fuel from trains in Factorio, you need to use pumps. Position the pumps next to the rail, with arrows pointing in the direction of loading and unloading.
Fluid wagons, also known as rail tankers, are rail vehicles with multiple tanks that can hold fuel, oil, and water.
A maximum of three pumps can be connected to a fluid wagon, with one pump for each tank section.
Wood, coal, and solid fuel can be used to fuel trains. However, wood is not recommended as it burns quickly and is difficult to automate production.











































