
Auxiliary fuel tanks are additional tanks installed in vehicles to carry extra fuel. They are commonly found in diesel trucks, such as the F250 and 2500 models in Texas, and are useful for various purposes. These tanks can be used to refuel equipment in remote locations, saving time and money on transportation to fuel stations. They are also beneficial during emergencies, such as natural disasters, and can extend the range of vehicles for towing. The demand for auxiliary fuel tanks increases with rising fuel prices, and they are often referred to as transfer tanks in some regions.
| Characteristics | Values |
|---|---|
| Purpose | Filling other diesel-powered equipment that can't go to a gas station |
| Use cases | Fueling equipment in remote locations, extending range for towing, filling up emergency generators after disasters |
| Benefits | Saving money on fuel, avoiding running out of fuel, reducing time spent fueling |
| Installation | Can be installed by the user or a professional, with videos and guides available online |
| Legality | May vary depending on location and type of tank |
| Capacity | Varies depending on the size of the tank, ranging from 40 to 95 gallons in the examples provided |
| Range | A 95-gallon tank can last about 800-2,000 miles depending on usage |
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What You'll Learn

Convenience and cost-effectiveness
The convenience and cost-effectiveness of extra diesel fuel tanks are evident in several ways. Firstly, larger tanks provide an extended driving range, reducing the frequency of fuel stops. This convenience is particularly valuable for long-distance travel, off-roading adventures, or RVing, as it offers peace of mind and eliminates the worry of running out of fuel in remote areas. Additionally, with extra fuel capacity, drivers can strategically stock up on less expensive fuel, making significant savings over time. This advantage is especially beneficial for businesses that rely on diesel fuel, such as those in the transport and logistics industries, where small savings per litre can accumulate substantial cost reductions across multiple vehicles.
The efficiency gains from extra diesel fuel tanks are also noteworthy. By reducing the need for frequent refuelling stops, vehicles can stay on the road longer, maximising time and improving operational efficiency. This increased efficiency can be crucial for businesses with time-sensitive operations or those seeking to optimise their fuel usage.
For some industries, such as agriculture, diesel storage is essential during busy seasons. On-site diesel storage enables farmers to work extended hours during late summer and early autumn, ensuring they can meet their harvesting, ploughing, cultivation, and sowing deadlines. The convenience of having immediate access to fuel allows them to speed up their workload and enhance overall productivity.
Extra diesel fuel tanks also offer the flexibility to choose when and where to refuel. This freedom can be advantageous when planning trips or navigating remote areas, as drivers are not restricted by the availability of fuel stations. Additionally, in regions with fluctuating fuel prices, such as the United States, larger tanks provide the option to fill up when prices are lower, mitigating the impact of price variations.
While the initial investment in a larger diesel fuel tank may be significant, as noted by some users, the long-term benefits of convenience and cost savings can outweigh this expense. The ability to travel further without refuelling, the potential for strategic fuel purchases, and the improved efficiency and flexibility make extra diesel fuel tanks a prudent choice for many individuals and businesses.
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Transferring fuel to other vehicles
Extra diesel fuel tanks, also known as transfer tanks, are commonly used by people who work in industries that require heavy equipment, such as construction and agriculture. They are also useful for those who work in remote areas with limited access to fuel, or for those who need to travel long distances.
Transfer tanks can be used to refuel other vehicles or equipment, such as generators, and can be particularly helpful for increasing the range of smaller accompanying vehicles. They can also be used to purchase fuel in bulk or in cheaper regions, resulting in significant cost savings over time.
When choosing a transfer tank, it is important to consider the type of fuel you will be using, as well as the weight, strength, corrosion resistance, and cost of the tank. Steel transfer tanks, for example, are heavier and more durable but are more susceptible to rust and corrosion, especially in damp or salty environments. Aluminum transfer tanks, on the other hand, are lightweight and corrosion-resistant but may be less durable.
Some companies, such as Transfer Flow, offer refueling tank systems that are DOT-legal and compatible with various fuel types, including gasoline, diesel, and kerosene. Their tanks are made from high-yield aluminized steel, have internal baffles to reduce fuel sloshing, and come with all the necessary components for installation, including a pump, fuel hose, nozzle, and installation hardware.
By utilizing a transfer tank, individuals and businesses can minimize downtime spent refueling, leading to increased productivity and a more seamless experience when operating in remote locations or managing time-sensitive tasks.
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Fuelling equipment in remote locations
Auxiliary fuel tanks come in various sizes and configurations to meet specific requirements. They can be installed in trucks to extend their range and reduce the need for refuelling, which can be a time-consuming and costly exercise. In remote areas, security is also a concern, as fuel tanks can be drained by thieves. By having an auxiliary fuel tank, you reduce the need to travel with large quantities of fuel, reducing the risk of theft.
When choosing an auxiliary fuel tank, it is important to consider the unique fuel requirements of your equipment, including fuel cooling, oil integration, and generator engine compatibility. Understanding these specific needs will ensure seamless integration and optimal performance. Additionally, it is crucial to follow safety guidelines and understand the common problems associated with fuel tanks, such as those caused by high temperatures, to ensure reliable fuel storage.
For those working in remote locations, it may be beneficial to utilise fuel delivery services that can provide a reliable supply of fuel to your tanks, ensuring that your vehicles and equipment remain fuelled even in the most remote areas. This can save time and resources, allowing you to focus on your core operations. Overall, auxiliary fuel tanks and fuel delivery services play a crucial role in ensuring a steady and reliable fuel supply for equipment and vehicles in remote locations.
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Extending range for towing
Auxiliary fuel tanks are an effective way to extend the range of your vehicle when towing. These tanks work in tandem with the stock OE fuel tank of your vehicle, providing additional fuel capacity. Auxiliary tanks are typically installed in the bed of a pickup truck, although they can also be mounted beneath a vehicle. They come in a variety of shapes and sizes, with capacities ranging from 30 to 100 gallons of fuel.
One significant benefit of auxiliary fuel tanks is the increased driving range they offer. With the extra fuel capacity, you can go longer distances without worrying about refuelling, which is especially useful when towing. This extended range means fewer stops during long hauls, saving you time and money. Additionally, with a larger fuel capacity, you have the flexibility to choose gas stations with better prices, as you are not limited to the nearest option.
Auxiliary fuel tanks also provide convenience and peace of mind when travelling through remote areas or unfamiliar territories. They eliminate the stress of constantly monitoring your fuel gauge and worrying about running out of fuel. With the additional fuel supply, you can venture on long journeys without the constant need to search for gas stations, which can be tricky to navigate with a towed vehicle.
When choosing an auxiliary fuel tank, consider the capacity that best suits your needs. For example, the Titan Sidekick Fuel Tank is ideal for Ford Rangers, while the Titan's Travel Trekker is a 40-gallon diesel fuel tank made from military-grade polymer and comes with a lifetime warranty. Another option is the KSH auxiliary fuel tank, which is custom-built to fit Ford, GM, and RAM pickups with fifth-wheels and tonneau covers.
In addition to the fuel tank itself, you may also want to consider a combo toolbox/tank option, which provides a convenient all-in-one solution for your storage and fuel needs. These combos typically include a toolbox and an auxiliary fuel tank, allowing you to store tools and other equipment while also increasing your vehicle's mileage between fill-ups.
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Avoiding running out of fuel
Running out of diesel fuel can have serious consequences, so it is important to take steps to avoid this. Diesel engines operate on a compression-ignition principle, which means that air is compressed until it reaches a high enough temperature to ignite the injected diesel fuel. When a diesel engine runs out of fuel, it will eventually stall, and this abrupt shutdown can be very dangerous, especially on busy roads.
An auxiliary fuel tank can help you avoid running out of fuel. These tanks are often installed in the bed of trucks and can be used to fill up equipment in the field, saving time and money. They can also be used to extend the range of your truck for towing. If you are tired of hauling around fuel cans or paying high prices for fuel, an auxiliary tank may be a good option. These tanks can be connected directly to your truck's factory fuel tank, and come in a range of sizes.
If you are unable to install an auxiliary tank, there are other ways to avoid running out of fuel. One option is to carry a spare fuel jug with a long filler nozzle. This can be used to top up your tank when necessary, avoiding the risk of running out. It is also important to pay attention to your fuel levels and refuel before you get too low. Modern technology can help with this, as real-time maintenance alerts can notify you when your fuel is running low.
The consequences of running out of diesel fuel can be severe. When your fuel pump sends air through your fuel system instead of gas, your vehicle will shut down. To restart the vehicle, the air must be removed from the system, a process known as "bleeding". This can be time-consuming and inconvenient, and may even require a service call. Running out of diesel can also cause damage to your fuel system, as sediment at the bottom of the tank can be stirred up and sent through the system, clogging or breaking vital components. This can result in high repair costs and extended periods of downtime.
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Frequently asked questions
An extra diesel fuel tank is important because it saves you from having to carry around a bed full of fuel cans. It also helps you save money on fuel.
You can purchase an extra diesel fuel tank from manufacturing companies or online. You can also get it installed by companies such as Midway Tanks LLC or Earl Owens.
You can use an extra diesel fuel tank to fill up your vehicle or equipment in the field when you are in a remote location. It can also be plumbed into your truck's fuel system to extend its range.











































