Mercedes Mullins
Auxiliary fuel tanks are additional fuel storage systems for vehicles, particularly trucks. They are custom-crafted to match the specific make and model of the truck, ensuring a seamless integration that maintains the vehicle's original configuration and aesthetics. Auxiliary tanks are plumbed directly into the stock factory tank, allowing fuel to be efficiently transferred from the auxiliary tank to the main fuel tank using a pump and hoses. This eliminates the need for manual refuelling stops, saving time, money, and stress for drivers. The tanks are designed to be straightforward to install, with detailed instructions provided, and can be purchased from various suppliers such as Midway Tanks LLC, Dee Zee, and RDS.
| Characteristics | Values |
|---|---|
| Purpose | Save money, time and stress |
| Use | Bring extra fuel on a trip, e.g. for an ATV, or to top off a generator |
| Installation | Straightforward, without significant modifications to the vehicle |
| Connection | Plumbed right into the stock factory tank, with a small 12v pump or gravity-fed |
| Shut-off valve | Yes |
| Transfer mechanism | Pump and a set of hoses |
| Transfer setup | Manual or automatic |
| Transfer pump | Manual or 12v electric |
| Capacity | Varies, e.g. 30 gallon, 40 gallon, 55 gallon |
| Fuel type | Primarily diesel, but can be certified for other fuels |
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What You'll Learn
Saving money, time and stress
An auxiliary fuel tank is an additional fuel storage option for your vehicle. It is a custom-crafted tank that is designed to match the specific make and model of your truck, ensuring a seamless installation process without significant modifications.
Saving Money, Time, and Stress
The rising fuel prices and supply chain issues have made auxiliary fuel tanks a valuable investment for vehicle owners. Here's how they can save you money, time, and stress:
Saving Money
With an auxiliary fuel tank, you can save money by filling up at locations with lower fuel prices. For example, instead of fuelling up in California at a higher price per gallon, you can fill your auxiliary tank in Arizona, where fuel prices are lower. This simple decision can result in significant savings over time, especially if you frequently travel across different states or regions with varying fuel costs.
Additionally, you can avoid the costly fines associated with late deliveries due to running out of fuel. With a larger fuel capacity, you can plan your trips more efficiently and reduce the risk of unexpected delays caused by refuelling.
Saving Time
Auxiliary fuel tanks eliminate the need to make frequent stops for refuelling, saving you valuable time on your journeys. The convenience of having additional fuel allows you to stay on the road for longer periods without the hassle of constantly searching for fuel stations or truck stops. This is especially beneficial when travelling through areas with limited fuel options.
Moreover, the time spent during refuelling stops can add up quickly. By reducing the frequency of these stops, you can gain extra time for another run or simply arrive at your destination earlier, increasing your overall productivity.
Reducing Stress
Auxiliary fuel tanks alleviate the stress and anxiety associated with the constant worry of running out of fuel. With a larger fuel capacity, you can confidently embark on long-distance trips without the fear of being stranded on the roadside. This peace of mind is invaluable, especially when travelling through remote areas or participating in events like the Arctic road rally.
Additionally, the hassle of carrying and refilling fuel cans is eliminated. Auxiliary fuel tanks are integrated directly into your vehicle's fuel system, providing a seamless and mess-free refuelling experience. You no longer have to deal with the inconvenience and odour of spilling diesel or the frustration of leaking and discoloured fuel cans.
In conclusion, auxiliary fuel tanks offer a cost-effective and time-saving solution for vehicle owners, especially those frequently travelling long distances or navigating areas with limited fuel options. By investing in an auxiliary fuel tank, you gain not only financial savings but also the invaluable benefits of reduced stress and increased efficiency on the road.
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The difference between transfer and auxiliary tanks
An auxiliary fuel tank is a supplementary tank that can be added to a vehicle to increase its fuel capacity and extend its range. It is a common option for vehicles that require additional fuel capacity for extended trips, hauling heavy loads, or operating in remote areas where fuel may not be readily available. Auxiliary fuel tanks come in various sizes and shapes and can be installed in different locations on a vehicle, depending on the vehicle's configuration and the tank's design. They can be made from different materials, including steel, aluminium, or composite materials, and can be customised to fit the specific needs of the vehicle and its owner.
Now, let's discuss the key differences between transfer tanks and auxiliary fuel tanks:
Transfer tanks are designed to safely and legally transport fuel from one location to another. They are typically used for refuelling equipment and vehicles in the field or at a remote work site. Transfer tanks are not connected to the vehicle's fuel system and do not supply fuel directly to the engine. Instead, they are meant to store and transport fuel, and they often come with a pump and a nozzle for easy refuelling. Transfer tanks are commonly made from durable materials like steel or aluminium and are designed to withstand the rigours of transportation and outdoor use. They may also have additional features like locking lids, venting systems, and grounding mechanisms to ensure safe fuel handling and compliance with local regulations.
Auxiliary fuel tanks, on the other hand, are connected to the vehicle's fuel system and provide additional fuel capacity for the engine. They are designed to extend the vehicle's range and are often used for long-distance travel, heavy-duty applications, or operating in remote areas where refuelling stations may be scarce. Auxiliary fuel tanks can be transferred to the vehicle's stock fuel tank, providing a seamless increase in fuel capacity. They may also have their separate fuel pump and sending unit, allowing them to function as a completely independent fuel system. Some auxiliary fuel tanks are designed to be switched on and off, allowing the driver to choose when to utilise the additional fuel capacity.
One of the key distinctions between transfer and auxiliary tanks lies in their intended use and installation. Transfer tanks are generally installed in the truck bed or rear cargo area of a vehicle, utilising the space typically occupied by cargo. They are often stand-alone units that do not require complex installations. In contrast, auxiliary fuel tanks can be installed in various locations, depending on the vehicle's configuration and the tank's design. They may be mounted in the vehicle's undercarriage, inside the truck bed, or even replace the vehicle's stock fuel tank for a larger capacity option. Auxiliary fuel tanks often require more intricate installations, involving connections to the vehicle's fuel lines, electrical systems, and possibly the dashboard fuel gauge.
Another difference lies in the regulatory requirements for transfer and auxiliary fuel tanks. Transfer tanks, being used for fuel transport, often have specific regulations and safety standards that must be met. This includes requirements for proper ventilation, grounding, and spill containment to prevent accidents and minimise the risk of fire or explosion. Auxiliary fuel tanks may also have regulatory requirements, but they can vary depending on the jurisdiction. In some cases, auxiliary fuel tanks may need to comply with emissions standards and may require special permits or inspections, especially if they significantly alter the vehicle's fuel capacity or configuration. It is important to check local laws and regulations before installing either type of fuel tank to ensure compliance and safe operation.
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Installation process
Installing an auxiliary fuel tank can be a great way to extend your vehicle's driving range and efficiency. Before beginning the installation, it is important to prioritise safety and ensure you have a clear and spacious working environment. Here is a step-by-step guide on how to install an auxiliary fuel tank:
Step 1: Preparation
Firstly, ensure the vehicle is turned off and all power sources are disconnected to prevent any accidental sparks or electrical hazards. Wear protective gear, including gloves and eyewear, to safeguard yourself from potential splashes or debris during the installation process.
Step 2: Disconnect and Remove
Carefully disconnect all wiring and connections leading to the existing fuel tank or other power sources. Securely disconnect each connection to avoid short circuits once the new setup is installed. Remove the auxiliary pump kit from its current location and set it aside for cleaning and preparation.
Step 3: Space and Placement
Ensure you have ample space to work and remove any items inside the vehicle bed. The auxiliary fuel tank should be placed in the desired location, ensuring some space around all four sides to prevent the tank from rubbing against the vehicle bed.
Step 4: Marking and Drilling
Visibly mark the holes where you will attach the fuel tank to the vehicle bed. Use a brightly coloured marking tool, such as a wax pen or chalk, to avoid drilling mistakes. Drill the holes and set up the placement of the auxiliary fuel tank.
Step 5: Final Connections
Your auxiliary fuel tank will come with a shut-off valve that screws into the bottom drain hole. Connect a rubber fuel line from this valve to your adapter unit. You can choose to keep this valve open or only open it when filling the tank. Ensure your installation has no leaks, and always fill the factory tank first and replace the factory fuel cap.
Remember to follow the specific instructions provided with your auxiliary fuel tank and seek professional advice if needed to ensure a safe and successful installation.
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Auxiliary tank types
An auxiliary fuel tank is an additional fuel reservoir that can be installed in a vehicle to extend its range. Auxiliary tanks can be used as additional capacity for a factory tank with the use of an install kit. They are particularly useful for those who want to save time and money by avoiding frequent fuel stops, especially in areas with limited access to fuel stations.
There are several types of auxiliary fuel tanks available, each designed to suit specific vehicles and applications:
- In-bed auxiliary fuel tanks: These tanks are designed to be installed in the bed of a pickup truck, providing additional fuel capacity. They come in various sizes, ranging from 37 gallons to 100 gallons, and can more than double the driving distance. Some in-bed tanks are designed to fit under retractable bed covers, while others are compatible with over-the-bed-rail toolboxes.
- Aluminum auxiliary fuel tanks: These tanks are constructed from durable aluminum and offer expanded fuel capacity for various applications, including boats, generators, and pressure washers. They are designed for exterior areas and often include features such as a vented fill cap and dual withdrawal tubes.
- Wedge-style auxiliary fuel tanks: These tanks are designed for full-size Dodge, Ford, and GM diesel trucks. They offer a custom look compared to rectangular tanks and can be paired with a toolbox for added functionality.
- L-shape auxiliary fuel tanks: L-shape tanks are designed to fit long bed diesel trucks and can be used with an over-the-rail toolbox. They are constructed from aluminum and are fully baffled to reduce fuel sloshing.
- Under-toolbox auxiliary fuel tanks: These tanks are designed to fit discreetly underneath an over-the-rail toolbox, providing additional fuel capacity without taking up additional space in the vehicle's bed.
- Rectangular auxiliary fuel tanks: Rectangular tanks, such as the Dee Zee DZ91752X, offer a compact and efficient design, providing additional fuel capacity without taking up excessive space.
- Vehicle-specific auxiliary fuel tanks: Some auxiliary fuel tanks are designed specifically for certain vehicles, such as the ATI auxiliary fuel tank for 2013+ Dodge Ram Trucks or the Southern Truck diesel auxiliary fuel tank install kit for 2013-2020 Ram trucks.
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Fuel transfer mechanism
An auxiliary fuel tank is an additional fuel reservoir that can be installed in a vehicle to increase its fuel capacity and, consequently, its driving range. These tanks are particularly useful for long-distance travel, reducing the need to refuel at truck stops, which can be costly and time-consuming.
Now, let's delve into the fuel transfer mechanism for auxiliary fuel tanks:
Fuel transfer tanks, also known as refueling tanks, facilitate the transfer of fuel from the auxiliary tank to the vehicle's primary fuel tank. These transfer tanks are equipped with a standard 2" bung at the top, which serves as the mounting point for a transfer pump. This pump enables the movement of fuel between the tanks.
One common method of transferring fuel is through gravity feed systems. In this design, gravity is employed to move fuel from the auxiliary tank into the primary tank. This method relies on the auxiliary tank being mounted higher than the primary tank, allowing fuel to flow downwards.
Another approach utilizes brand-specific fuel connections. These connections are unique to certain vehicle brands and are designed to interface with their proprietary fuel systems. This ensures compatibility and secure fuel transfer between the auxiliary and primary tanks.
Additionally, some auxiliary fuel tanks are constructed with internal baffles. These baffles enhance the strength and durability of the tank while also aiding in stabilizing the fuel during transportation. This feature is particularly beneficial for off-road driving or traversing uneven terrain.
It is important to note that the installation process for auxiliary fuel tanks can vary. Some tanks come with comprehensive installation kits, providing all the necessary parts for a straightforward installation. However, it is always advisable to consult professionals or refer to manufacturer guidelines to ensure a safe and proper installation.
Overall, the fuel transfer mechanism for auxiliary fuel tanks revolves around utilizing transfer pumps, gravity feed systems, brand-specific connections, and internal baffles to facilitate the movement of fuel between the auxiliary and primary fuel tanks, ultimately extending the vehicle's driving range.
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Frequently asked questions
An auxiliary fuel tank is an additional fuel storage tank for your truck or vehicle.
Auxiliary fuel tanks are installed to increase fuel capacity and avoid the need to refuel as often. This can save money, time and stress.
Auxiliary tanks are plumbed directly into the stock factory tank. This is usually done with a small pump or via gravity.
Auxiliary fuel tanks are often made from aluminium.
