Mercedes Mullins
Ford F-350 Super Duty truck owners can install an auxiliary fuel tank to increase the vehicle's range and reduce the need for frequent refuelling stops. This is particularly useful for those who want to go on long-distance trips without having to worry about finding fuel stations. There are various options available for adding an auxiliary tank, such as purchasing a larger replacement tank or installing a secondary tank in the truck bed. Auxiliary fuel tank installation kits, such as the one offered by Southern Truck Lifts, provide the necessary components for a gravity feed system that connects to the truck's fuel filler neck. However, it's important to carefully handle combustible substances like fuel and consider potential issues such as water condensation and contamination in the auxiliary tank.
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What You'll Learn
The benefits of an auxiliary fuel tank
Auxiliary fuel tanks are a great addition to any work truck, providing several benefits. Firstly, they increase the fuel capacity of your truck, allowing you to travel longer distances without worrying about running out of fuel. This is especially useful if you frequently travel long distances or work in remote areas, as it reduces the number of stops you need to make for refuelling.
Another advantage of auxiliary fuel tanks is their convenience and flexibility. They can be discreetly placed in the truck bed without sacrificing space, and some designs even combine fuel tank and toolbox functionality, allowing you to store your tools and extra fuel in one unit. This not only saves space but also provides a safer alternative to carrying plastic containers of extra fuel, which can be unsafe and inconvenient.
Auxiliary fuel tanks also offer the benefit of fuel price flexibility. With extended fuel capacity, you can be more selective about when and where you refuel, avoiding fuel price gouges around recreational areas or remote gas stations with inflated prices due to a lack of competition.
Furthermore, auxiliary fuel tanks provide peace of mind and improved driving experience. With the security of extra fuel, you won't need to worry about fuel consumption, especially when transporting heavy loads or travelling to areas with limited fuel options. Auxiliary tanks are installed and connected directly to your stock tank, allowing for easy fuel transfers with the press of a button. This technology has advanced beyond military use, making it accessible for various vehicles, including trucks, motorcycles, boats, and ATVs.
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Installation kits for F350 models
Auxiliary fuel tanks require installation kits to connect to your truck's factory fuel tank. Diesel tanks require Fuel Shotz Install Kits, while gasoline tanks require Universal Gasoline Install Kits.
Southern Truck Lifts offers a Diesel Auxiliary Fuel Tank Install Kit for all 2011 to 2023 Ford F-350 Super Duty models. This kit uses a gravity feed system to continually refuel your diesel fuel tank. It connects your auxiliary tank to your truck's fuel filler neck, keeping your tank full. It also features a shut-off valve to prevent overflow. This kit requires minor drilling and some cutting on the OEM fuel filler hose/neck for installation. It is made with high-quality, corrosion-resistant components for long-lasting performance.
Another option is the RDS Diesel Install Kit, which is suitable for 1999-2017 Ford F250 and F350 models. This kit does not require any wires or switches to be installed and offers rollover protection.
For those looking for a simple installation process, the Fuel Shotz Install Kit can be set up in less than an hour.
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Gravity feed systems
There are several companies that offer gravity feed systems for auxiliary fuel tanks in F350 trucks, including Southern Truck Lifts and Transfer Flow. These systems typically come with installation kits that require some minor drilling and cutting. The kits usually include high-quality, long-lasting components such as corrosion-resistant aluminium tees and complete hose assemblies with durable clamps.
When installing a gravity feed system, it is important to ensure that the ball valve is installed correctly to prevent fuel overflow. Some systems may also include a solenoid valve to control the flow of fuel and prevent overflow. It is recommended to always fill the main tank first and then the auxiliary tank to maintain proper fuel pressure.
Some users have reported issues with gravity feed systems, such as slow fuel transfer rates and the need to have the truck stationary for the system to work. However, others have found gravity feed systems to be effective and efficient, with no issues reported. It is important to carefully consider the pros and cons of gravity feed systems before installing one in your F350.
Overall, gravity feed systems for auxiliary fuel tanks in F350 trucks can be a viable option for those looking to increase their fuel capacity and reduce the need to stop for refuelling. With proper installation and maintenance, these systems can provide a reliable and efficient solution for extended driving distances.
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Electric pump systems
When installing an auxiliary fuel tank in your F350, you have the option of using a gravity feed system or an electric pump system. While a gravity feed system is a simpler setup, an electric pump system offers more flexibility in the placement of the auxiliary tank.
An electric pump system involves using an electric fuel pump to transfer fuel from the auxiliary tank to the primary tank. This setup allows you to mount the auxiliary tank in various locations, as you are not relying solely on gravity to move the fuel.
There are several electric fuel pump options available for the F350, including:
- A-Premium Electric Fuel Pump Module Assembly: This assembly includes a pressure sensor and is compatible with Ford E-350/450 Super Duty models from 2011 to 2017, with engine sizes of 4.6L, 5.4L, and 6.8L.
- Diesel Install kits: These kits can be more expensive but offer an easy installation process, as you simply need to wire the pump to a circuit.
When installing an electric pump system, you will need to consider the wiring and any necessary modifications to your fuel system. It is recommended to consult a professional or a mechanic with experience in auxiliary fuel tank installations to ensure a proper and safe setup.
Additionally, keep in mind that an electric pump system will require maintenance and may need to be replaced over time. Signs of a failing fuel pump in your F350 include shuddering during acceleration, a decrease in fuel pressure, and a sudden drop in fuel economy.
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Water contamination prevention
Water contamination in fuel tanks is a serious issue that can lead to engine problems and even total engine failure. Water can enter fuel tanks through condensation, rain, or venting, and it is heavier than diesel, so it sinks to the bottom of the tank. This means that when you draw fuel from the tank, you risk drawing water into the engine, which can cause significant issues.
To prevent water contamination in an auxiliary fuel tank on an F350, there are several measures you can take:
First, ensure that the auxiliary tank is installed correctly. Bed-mounted auxiliary fuel tanks typically include a fuel pump mounted on top of the tank, with a draw tube that stops a few inches short of the bottom. This design helps to prevent the delivery of accumulated water and sediment that settles at the bottom of the tank. You can also install a breather on top of the tank to avoid vacuum or overpressure issues.
Second, use high-quality fuel from reputable suppliers and consider adding fuel additives to prevent corrosion and improve engine performance. Fuel additives can help to break down any water that may be present in the fuel, reducing the risk of water accumulation in the tank.
Third, regularly inspect and maintain your fuel tank and its components. Check for leaks, corrosion, or damage, and replace parts as necessary. Inspect fuel lines, pumps, filters, and connections. Proper maintenance and storage can help to prevent water contamination and other fuel tank issues.
Fourth, consider the environment and conditions in which you are fuelling and storing your vehicle. Store the tank in a dry, ventilated area, and avoid filling the tank in extremely humid conditions, as this can promote condensation and water accumulation. Additionally, ensure that the tank is level and secured properly to avoid overfilling, which can increase the risk of water contamination.
Finally, monitor your fuel levels and fuel quality regularly. Use a fuel level gauge to keep track of the fuel level in your auxiliary tank, and consider installing a water separator to help remove any water that may be present in the fuel. Check your fuel for contamination every 30 days, and if you notice any water accumulation, have the tank drained and cleaned by a professional.
By following these measures, you can help prevent water contamination in your auxiliary fuel tank on your F350, ensuring the optimal performance and longevity of your engine.
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Frequently asked questions
An auxiliary fuel tank is an additional tank that can be added to the bed of your truck to increase its fuel capacity.
Auxiliary fuel tanks provide a greater range, reducing the frequency of trips to the fuel station. They also prevent the need to trailer equipment directly to the fuel pump.
Fuel transfer tanks are available for the Ford F-350 from a variety of manufacturers, including Dee Zee, RDS, Delta, UWS, Fill Rite Tuthil, Weather Guard, Jobox, ProMaxx Automotive, Southern Truck, Lund, TrailFX, Transfer Flow, and ATTA.
There are auxiliary fuel tank installation kits available for the Ford F-350, such as the one offered by Southern Truck Lifts. These kits use a gravity feed system to connect the auxiliary tank to the truck's fuel filler neck. Installation typically requires minor drilling and may also involve cutting the OEM fuel filler hose/neck.
Auxiliary fuel tanks can be prone to water and contaminant buildup at the bottom of the tank, which can be drawn into the main tank during fuel transfer. This can be mitigated by using a fuel pump with a draw tube that stops short of the tank bottom or by keeping the fuel tank full to prevent condensation buildup.
