
Auxiliary fuel tanks are an excellent option for those looking to increase their vehicle's fuel capacity and gain peace of mind when travelling long distances or in remote areas. Also known as transfer or add-in tanks, these auxiliary tanks can be installed in various locations on a vehicle, such as beneath the vehicle or in the trunk, and offer a seamless integration with your car's existing fuel system. They come in a range of sizes, from 15 gallons to over 100 gallons, and can be customised to fit your specific needs. With an auxiliary tank, you can save money by filling up at cheaper fuel stations and avoid the stress and time spent searching for a fuel station, especially in remote areas where stations may be few and far between.
| Characteristics | Values |
|---|---|
| Installation | Can be done by a professional or as a DIY project |
| Cost | Varies; one user reports a cost of $175 for a 15-gallon auxiliary fuel tank |
| Time | Can be installed in a few hours |
| Capacity | Can increase capacity by hundreds of gallons, depending on the vehicle |
| Range | Can increase range by hundreds of miles |
| Convenience | Eliminates the need to stop for fuel as often, saving time and money |
| Safety | Reduces the risk of running out of fuel in remote areas or busy freeways |
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What You'll Learn

Save money by stocking up on cheaper fuel
If you're looking to save money on fuel, investing in an extra fuel tank can be a great option. Here's why:
Buying Fuel in Bulk Saves Money
Firstly, buying fuel in bulk is almost always cheaper than purchasing it at a pump. While the savings per gallon may vary, it is not uncommon to save around 25 cents per gallon, or even up to 70 cents per gallon, depending on the supplier and market conditions. These savings can add up significantly over time, especially if you have a large fleet of vehicles or high fuel requirements.
Convenience and Time Savings
Having an extra fuel tank on-site or in your vehicle means fewer trips to the gas station, saving you time and money. The average visit to a branded fuel station for fleet vehicles is around 20 minutes, which can impact productivity and efficiency. With an on-site bulk fuel tank, your vehicles can refuel quickly and conveniently, reducing downtime and the need to exit freeways or go out of their way to find a gas station.
Preventing Emergency Expenses
An extra fuel tank ensures you always have fuel at the ready, preventing costly emergency expenses. For example, if one of your vehicles needs unexpected refuelling, you can avoid calling for emergency services and simply use your on-site or auxiliary tank to fill up. This can be especially important for businesses that rely on commercial heating fuel or construction operations, where running out of fuel can cause delays and additional costs.
Wholesale Fuel Advantages
Wholesale fuel is often sold at a portion of the branded markup value, meaning you pay less per gallon. Additionally, wholesale fuel suppliers may provide the tank for you, and they typically deliver the fuel directly to your location, saving you the hassle of arranging transportation.
Increased Range and Capacity
Auxiliary fuel tanks for vehicles can significantly increase your range and capacity. For example, upgrading to an auxiliary tank can nearly double your vehicle's original range, allowing you to go on longer trips without worrying about refuelling.
In summary, investing in an extra fuel tank, whether on-site for your fleet or as an auxiliary tank in your vehicle, can lead to significant cost savings over time. It provides the convenience of having fuel readily available, prevents emergency expenses, and takes advantage of the cost benefits of buying fuel in bulk.
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Avoid the stress of searching for fuel stations
Getting an extra fuel tank can help you avoid the stress of searching for fuel stations. This is especially true if you're driving through remote areas or regions with limited fuel infrastructure. With an auxiliary tank, you can increase your vehicle's range, giving you peace of mind and reducing the need to constantly look out for fuel stations.
Auxiliary fuel tanks come in various sizes and can be customised to fit your vehicle. They can be installed in different locations, such as beneath the vehicle, in the trunk, or even in the space where the spare tire is usually kept. Some tanks can be seamlessly integrated with your car's existing fuel system, utilising the stock fuel gauge and fill neck, while others may have separate components.
The process of installing an auxiliary fuel tank can vary in complexity. Some tanks are designed for DIY enthusiasts and seasoned mechanics alike, offering straightforward installation with all the necessary parts included. On the other hand, certain vehicles may require custom-made solutions, and you might need to consult specialists for installation.
By investing in an extra fuel tank, you can save time, money, and stress. No longer will you be at the mercy of fluctuating fuel prices at truck stops or face the anxiety of running low on fuel in unfamiliar areas. With the added fuel capacity, you gain the freedom to explore and the assurance that you can reach your destination without constantly worrying about refuelling.
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Avoid fines for being late for deliveries
An extra fuel tank can be a worthwhile investment for businesses aiming to streamline their logistics operations and avoid fines for late deliveries. Here are several ways that an extra fuel tank can help businesses stay on schedule and mitigate the risk of delays:
Fuel Efficiency and Cost Savings:
An extra fuel tank can contribute to fuel efficiency and cost savings. By having a backup fuel source, businesses can avoid the urgency of refilling tanks at peak demand times, such as during winter for heating systems. This proactive approach allows for shopping around for the best fuel prices and avoiding extra charges associated with emergency refills.
Reduced Delivery Delays:
With an extra fuel tank, businesses can reduce the risk of delivery delays caused by fuel shortages. This is especially beneficial for businesses with fleets of vehicles, ensuring that operations can continue uninterrupted by fuel refuelling stops.
Enhanced Logistics Control:
In some CPU arrangements, brands surrender control over logistics operations, leading to missed appointments and fines. By owning an extra fuel tank and taking charge of their fuel supply, businesses can regain control over their logistics. This enables them to set their own schedules, ensure timely deliveries, and avoid the fines associated with missed appointments.
Avoid Fuel Delivery Mistakes:
Fuel delivery mistakes, commonly known as "misdeliveries," can result in significant delays and financial penalties. Issues like delivering the wrong type of fuel, filling a leaky tank, or delivering to the wrong address can be mitigated by having an extra fuel tank on-site. This reduces the reliance on frequent fuel deliveries and the potential for human error.
Mitigating Fuel Leak Risks:
Fuel leaks can result in costly fines and environmental damage. By having an extra fuel tank, businesses can implement proper fuel storage procedures and undertake regular inspections and maintenance. This proactive approach helps to avoid the expensive fines handed out by regulatory bodies for fuel leaks and spills.
In summary, investing in an extra fuel tank can be a strategic decision for businesses aiming to streamline their operations, reduce delivery delays, and avoid costly fines. By enhancing fuel efficiency, reducing delivery delays, taking control of logistics, preventing misdeliveries, and mitigating fuel leak risks, businesses can maintain timely deliveries and protect their bottom line.
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Avoid the risk of running out of fuel in dangerous locations
Running out of fuel can put you and your passengers in danger. It can also cause damage to your vehicle. For example, if you run low on diesel, the fuel pump might send air through the fuel system instead of gas, causing the vehicle to shut down. If the engine cuts out, the power steering may be impacted, reducing your ability to guide the vehicle out of harm's way.
An auxiliary tank can help you avoid these risks by significantly increasing your vehicle's capacity. These tanks can be custom-made to fit in your trunk or where your spare tire is. They can also be installed beneath your vehicle or on top of it if it's a truck. The installation process is straightforward and can be done by a professional or by yourself if you have the right tools and skills.
Auxiliary tanks come in various shapes and sizes and can nearly double your vehicle's range. For example, an LRA auxiliary tank can increase your range to over 500 miles, while an LRA replacement tank can increase your capacity to 33 gallons, giving you approximately 600 miles on one fill.
By upgrading your vehicle with an auxiliary tank, you can have peace of mind knowing that you have the fuel capacity to reach your destination safely without the constant worry of running out of fuel in a dangerous location.
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Increase your vehicle's range
Auxiliary fuel tanks are an excellent way to increase your vehicle's range. These tanks can be custom-made or purchased from companies like TITAN Fuel Tanks, which manufactures aftermarket high-capacity gasoline and diesel tanks made from military-grade polymer. They come in various sizes and can be mounted beneath or on top of your vehicle, depending on the model.
Auxiliary tanks significantly increase fuel capacity and offer a unique "fill on the go" feature. For example, the Pajero aux tank boasts a range of 500-plus miles, and the Delica van's LRA replacement tank has a capacity of 33 gallons, allowing for approximately 600 miles on a single fill.
Installing an auxiliary tank can save you time and money by eliminating the need to stop at truck stops and pay higher fuel prices. It also provides peace of mind when travelling in remote areas or regions with limited fuel stations, ensuring you won't run out of fuel.
Additionally, auxiliary tanks can be installed by seasoned mechanics or DIY enthusiasts. They come with all the necessary parts, including straps and mounting hardware, making the process straightforward.
Upgrading your vehicle with an auxiliary fuel tank is a valuable investment, especially for those who travel frequently or adventure in off-road locations.
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Frequently asked questions
An extra fuel tank can save you time and money. You won't have to depend on truck stop prices and you won't have to spend time looking for fuel. You can also stock up on less expensive fuel when travelling in certain states.
Auxiliary tanks, also known as "transfer" or "add-in" tanks, can be mounted beneath a vehicle or on top of it. They come in a variety of sizes, ranging from 37 to 100 gallons.
You can either custom-make an auxiliary fuel tank or get someone to make one for you. You can also buy them from providers such as Midway Tanks LLC, TITAN Fuel Tanks, and Transfer Flow, Inc.











































