
Extended-range fuel tanks are an excellent solution for those tired of frequent fill-ups and looking to increase their vehicle's capacity. These tanks can be installed in various locations, depending on the vehicle's make and model. One common location is beneath the vehicle, but they can also be mounted on top, particularly for truck bed transfer tanks. Additionally, some vehicles offer the option of installing a larger primary tank, while others may accommodate a second tank. The size of the extended-range fuel tank can vary, typically ranging from 29 to 100 gallons, providing a significant increase in driving range and offering unmatched convenience for long journeys and remote adventures.
Where can extended-range fuel tanks be installed?
| Characteristics | Values |
|---|---|
| Vehicle type | Cars, trucks, boats, expedition vehicles |
| Tank location | Beneath a vehicle, on top of a truck bed, between the existing tank and rear wheels, in the rear |
| Tank capacity | 24 gallons, 26 gallons, 29 gallons, 30 gallons, 33 gallons, 37 gallons, 46 gallons, 50 gallons, 55 gallons, 56 gallons, 100 gallons |
| Tank shape | Round, rectangular |
| Installation time | 4-5 hours |
| Brand | Long Range America, TITAN Fuel Tanks, Isuzu, LRA |
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What You'll Learn

In vehicles, beneath or on top
Extended-range fuel tanks can be installed in vehicles in a variety of ways, depending on the make and model of the vehicle, as well as the specific requirements of the owner. One common method is to install an auxiliary or ""add-on" tank, which works in tandem with the vehicle's existing stock OE fuel tank. These auxiliary tanks can be installed either beneath or on top of the vehicle, depending on the type of vehicle and the specific tank model. For example, truck bed transfer tanks, such as those offered by TITAN, are typically installed on top of the vehicle, while auxiliary tanks for other types of vehicles may be mounted underneath.
Installing an extended-range fuel tank can provide several benefits, including increased fuel capacity, reduced fill-up frequency, and improved range. This can be particularly advantageous for those who frequently tow campers, trailers, boats, or other equipment over long distances, as well as for those who live in remote areas or prefer to go extended periods without refuelling.
When considering the installation of an extended-range fuel tank, it is important to take into account the available space in the vehicle. For some vehicles, there may be limited options for installing a second tank, especially if it needs to be exposed underneath the vehicle. In such cases, replacing the existing tank with a larger one may be a more feasible option. However, it is worth noting that replacing the OE fuel tank may require additional modifications, such as recalibrating the "Distance To Empty" feature or removing certain parts to ensure a proper fit.
Additionally, it is worth considering the potential risks associated with installing a second fuel tank, as it may double the risk of damage if both tanks are exposed under the vehicle. On the other hand, if the secondary tank is installed in a more protected location, it can offer some advantages in terms of reducing the risk of damage and improving fuel efficiency. Overall, the decision to install an extended-range fuel tank should be carefully considered, taking into account the specific needs and constraints of the vehicle and the owner's preferences.
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In aircraft, inboard of the engine nacelles
Extended-range fuel tanks are crucial for aircraft, enabling them to fly longer distances without needing to stop for frequent refuelling. This is especially important for both commercial and military aircraft. The addition of these tanks increases the aircraft's weight, requiring adjustments to take-off procedures and impacting performance. It also reduces the space available for passengers, cargo, or equipment.
One option for installing extended-range fuel tanks is inboard of the engine nacelles. This position is utilised in aircraft such as the King Air, where a rubber bladder auxiliary tank is located inboard of the engine nacelles on each wing. The fuel first transfers from the auxiliary tank to the nacelle tank, and then to the engine. This setup ensures a consistent fuel supply and aids aircraft balance during flight.
The Beechcraft Bonanza is another example of an aircraft that benefits from extended-range fuel tanks installed inboard of the engine nacelles. The original Bonanza 35 featured a 39-gallon wing-tank fuel system, which was later upgraded with the addition of a factory-installed 20-gallon rear fuselage tank. Some Beechcraft Bonanza aircraft have also been retrofitted with wingtip tanks, increasing their total fuel capacity and improving their range.
When considering the addition of extended-range fuel tanks, it is essential to evaluate the trade-offs between fuel capacity and cargo capacity, as well as the impact on aircraft performance and handling characteristics. The installation of these tanks can also increase the resale value of the aircraft and reduce fuel costs by allowing for fewer refuelling stops.
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Replacing OE tanks
The process of replacing OE tanks with extended-range fuel tanks involves careful planning and consideration. The first step is to identify the location of the OE tank in your vehicle. Typically, fuel tanks are located in the rear of the vehicle, either underneath the trunk or beneath the rear passenger seats. Once you have determined the location of the OE tank, you can proceed to the next steps:
Firstly, it is crucial to select the appropriate extended-range fuel tank for your vehicle. Ensure that the tank you choose is compatible with your vehicle's make, model, and year. This step is essential for a proper fit and optimal performance.
Next, drain the fuel from the OE tank and disconnect the fuel lines and electrical connections. Carefully remove the OE tank, taking note of any mounting brackets or hardware that will need to be transferred to the new extended-range tank. It is important to handle the OE tank removal with caution to avoid any potential hazards.
Now, install the extended-range fuel tank by following the manufacturer's instructions. Ensure that the tank is securely mounted and all connections are properly tightened. Pay attention to any specific instructions provided by the tank manufacturer to ensure a safe and proper installation.
Once the new tank is in place, reconnect the fuel lines and electrical connections. Refill the tank with fuel and check for any leaks. Ensure that all components are securely connected and functioning properly. Test the vehicle to ensure that the extended-range fuel tank performs as expected and that there are no issues with fuel delivery or engine performance.
Finally, extended-range fuel tanks can significantly increase the vehicle's fuel capacity, resulting in a longer driving range. This enhancement is particularly advantageous for those who frequently undertake long-distance journeys or drive in remote areas with limited access to fuel stations. Additionally, these tanks can be beneficial for vehicles with higher fuel consumption rates, reducing the frequency of refueling stops.
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As an additional tank
An extended-range fuel tank can be added to a vehicle as an additional tank. This is known as an auxiliary tank, "transfer" tank, or "add-in" tank. These tanks work in tandem with a stock OE fuel tank and can be installed in a few short hours. They are designed for seamless integration with your vehicle, ensuring that the installation is smooth.
Auxiliary tanks are often mounted beneath a vehicle, but they can also be placed on top if they are truck bed transfer tanks. For example, TITAN offers truck bed transfer tanks that can be installed in the truck bed. These tanks allow for filling on the go, with the press of a button that transfers fuel to the main tank.
The additional tanks can be made from HDPE with 12 mm walls and can be built in any shape. They can also be made from rotomolded, high-density, cross-linked polyethylene UV-resistant material, which is heavier than what is used in automotive racing applications.
When adding an extended-range fuel tank, there are a few things to consider. Firstly, the size of the tank will depend on the vehicle's requirements and the space available. Tanks can range in capacity from 37 gallons to 100 gallons. Secondly, the location of the tank should be considered. If the vehicle already has a tank, the additional tank can be placed between the existing tank and the rear wheels, or in the truck bed.
Extended-range fuel tanks offer increased fuel capacity, which is beneficial for those who travel long distances or live in remote areas. They eliminate the need for constant refuelling and provide convenience and peace of mind when venturing on long journeys or exploring remote areas.
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In boats
When it comes to installing extended-range fuel tanks in boats, there are a few options to consider. Firstly, it's important to determine the appropriate size of the fuel tank based on the boat's fuel consumption and range requirements. If you plan on spending extended periods on the water or travelling long distances without refuelling, a larger fuel tank may be necessary.
There are two main types of boat fuel tanks: portable and permanent. Portable tanks are designed to be easily removed from the boat and refilled. They are usually made of plastic and come in sizes ranging from one-gallon to fifty-gallon capacities. These are a good option for temporarily increasing the boat's range. To use these, fill them on a fuel dock and then secure them on the boat's deck with tie-down accessories.
Permanent fuel tanks, on the other hand, are installed in the boat's hull and are not meant to be removed. These are usually made of aluminium, plastic, or stainless steel, and can hold ten to several hundred gallons of fuel. They are typically found on larger vessels and powerboats. When installing permanent tanks, it is crucial to carefully plan and consider the boat's design and weight distribution.
Another option for extending the range of a boat is to use auxiliary fuel bladders or cells. These are flexible, puncture-resistant, and can be secured on the deck. They come in various sizes, with capacities ranging from 25 to 500 gallons. When empty, they can be rolled up for compact storage.
Additionally, some boaters choose to add extra fuel tanks to their vessels. These can be tied together with a crossover hose and a three-way valve, and it is recommended to install fuel shut-off valves for safety. When adding extra tanks, it is important to consider the weight distribution and potential impact on the boat's performance and stability.
It is worth noting that the weight of fuel can affect a boat's centre of gravity and performance. Therefore, careful consideration is required when adding extended-range fuel tanks to ensure the safety and efficiency of the vessel.
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Frequently asked questions
Extended-range fuel tanks can be installed in a variety of vehicles, including trucks, SUVs, and off-road vehicles. They are designed for seamless integration and can be mounted beneath or on top of a vehicle.
Popular options include auxiliary or add-on tanks, such as those offered by Long Range America and TITAN Fuel Tanks, and replacement tanks, which replace your existing OE fuel tank.
Extended-range fuel tanks offer increased fuel capacity, reducing the need for frequent fill-ups and extending your driving range. They also provide convenience and peace of mind when venturing on long journeys or exploring remote areas.
Yes, an alternative option is to use Jerry cans to carry additional fuel. However, Jerry cans can be messy, smelly, and less convenient than having a built-in extended-range fuel tank.
When choosing an extended-range fuel tank, consider the size and capacity that best suits your needs. Tanks range from 26.4 to 100 gallons, depending on the vehicle and specific requirements. Also, consider the installation process, compatibility with your vehicle, and any relevant regulations or restrictions, such as those for California residents.













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