Sylvie Willis
Auxiliary fuel tanks are subject to various regulations and laws that vary by region. In the United States, for example, the National Highway Traffic Safety Administration (NHTSA) discourages the use of auxiliary fuel tanks due to safety concerns, while the California Air Resources Board (CARB) has specific anti-tampering laws and requirements for these tanks. The legality of gravity-fed systems is also ambiguous and a cause for concern among regulatory agencies. Factors such as fuel type, size, and connection to the vehicle's fuel system play a role in determining the legality of auxiliary fuel tanks. It is important for individuals to be aware of the relevant laws and regulations in their specific location before installing or using auxiliary fuel tanks.
| Characteristics | Values |
|---|---|
| Fuel tank markings | Must include the manufacture's name, manufacture date, gallon size, and the statement "Meets all FMCSA requirements for non-side mounted fuel tank", and "not to exceed 95% of capacity." |
| Fuel connections | Connections from the auxiliary fuel tank to the primary system must not interfere with the functions of the primary system. |
| Fuel tank size | The size of the auxiliary tank is not explicitly stated, but it should not exceed the legal limit for the region. For example, in California, the legal limit for gasoline is 8 gallons, while a 55-gallon drum is mentioned as acceptable for diesel. |
| Fuel type | Gasoline auxiliary fuel tanks are generally illegal, while diesel auxiliary fuel tanks are exempt from this law. |
| Fuel transfer method | Auxiliary fuel tanks with a hand or electric pump/transfer device are legal. However, gravity-fed fuel tanks are illegal in some regions due to safety and environmental concerns. |
| Vehicle type | Auxiliary fuel tanks are discouraged for passenger vehicles due to safety risks. They are more commonly mentioned in the context of farm equipment and tractors. |
| Installation | Auxiliary fuel tanks must comply with the National Traffic and Motor Vehicle Safety Act and may require additional labels to indicate alterations to the vehicle. |
| Region-specific regulations | In California, auxiliary fuel tanks are subject to anti-tampering laws and must be evaluated and certified by the Air Resources Board before installation on emission-controlled vehicles. |
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What You'll Learn
- The National Highway Traffic Safety Administration discourages the use of auxiliary fuel tanks due to fire and explosion risks
- Auxiliary fuel tanks must meet certain safety standards and regulations, including clear and permanent markings
- Gravity-fed auxiliary gasoline tanks are illegal, but diesel tanks are exempt from this law
- Transfer tanks are different from auxiliary tanks and are legal if not directly connected to the engine fuel system
- Auxiliary fuel tanks are subject to California's anti-tampering laws and must be certified by the Air Resources Board
The National Highway Traffic Safety Administration discourages the use of auxiliary fuel tanks due to fire and explosion risks
The National Highway Traffic Safety Administration (NHTSA) discourages the use of auxiliary fuel tanks of any kind due to the risks of fire and explosion. This is because improperly manufactured or installed auxiliary fuel tanks can pose grave dangers. The NHTSA has stated that it will be making a press release warning consumers of these hazards and discouraging the use of such tanks.
The NHTSA is authorized to issue Federal motor vehicle safety standards applicable to entire motor vehicles or equipment for installation in motor vehicles. Safety Standard No. 301-75, Fuel System Integrity, applies to certain vehicles, including passenger cars, that use fuel with a boiling point above 32 degrees F. However, this standard applies to completed vehicles rather than fuel tanks or other fuel system components, so it does not apply to the manufacture of auxiliary fuel tanks.
Despite the inapplicability of Safety Standard No. 301-75, manufacturers of auxiliary fuel tanks must still design and manufacture them with safety in mind. They are subject to the defects responsibility provisions of the Act, which means that upon discovery of a safety-related defect, the manufacturer must notify vehicle owners, purchasers, and dealers and remedy the defect.
Additionally, a person who installs an auxiliary fuel tank in a new vehicle prior to its first purchase for purposes other than resale would be considered a vehicle alterer under NHTSA regulations. As an alterer, they would be required to affix an additional label to the vehicle stating that the vehicle, as altered, conforms to all applicable Federal motor vehicle safety standards.
It is important to note that the NHTSA does not test and approve the products of particular manufacturers of motor vehicles or motor vehicle equipment. Instead, it focuses on enforcement efforts, such as testing auxiliary tanks that have been installed in vehicles. The NHTSA also urges vehicle owners not to take actions that would degrade the performance of required safety features.
In summary, while there may be ways to legally use and install auxiliary fuel tanks, the NHTSA strongly discourages their use due to the potential risks associated with improper manufacture or installation. It is crucial to prioritize safety and adhere to all relevant regulations and standards when dealing with fuel systems and auxiliary fuel tanks.
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Auxiliary fuel tanks must meet certain safety standards and regulations, including clear and permanent markings
Auxiliary fuel tanks are subject to various safety standards and regulations, which can vary by location. In the United States, for example, the National Highway Traffic Safety Administration (NHTSA) discourages the use of auxiliary fuel tanks due to the risks of fire and explosion posed by improper manufacture or installation. However, the NHTSA does provide specifications for the manufacture and use of these tanks, and individuals installing them may be considered vehicle alterers, requiring them to affix additional labels to the vehicle stating compliance with Federal Motor Vehicle Safety Standards.
In terms of markings, fuel tanks must be clearly and permanently marked with specific information, including the manufacturer's name, manufacture date, gallon size, and certain statements regarding FMCSA requirements and capacity. These markings ensure that users have the necessary information to safely operate and maintain the auxiliary fuel tank.
Additionally, there are regulations surrounding the installation and functionality of auxiliary fuel tanks. For example, the fuel connections, lines, fittings, valves, and connections must not interfere with the normal functions of the primary fuel system. The size of these components should also be considered, with no portion being smaller than the factory fuel lines to prevent restricting fuel flow.
The legality of gravity-fed auxiliary fuel systems remains unclear due to US DOT ambiguity. However, safety and legality concerns have been raised regarding these systems, particularly regarding vehicle performance and the potential for hazardous conditions if the fuel hose is damaged.
It is important to research and comply with the specific regulations applicable to your location when considering the installation and use of auxiliary fuel tanks.
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Gravity-fed auxiliary gasoline tanks are illegal, but diesel tanks are exempt from this law
The legality of auxiliary fuel tanks varies depending on the type of fuel, the jurisdiction, and the specific regulations in place. In the United States, the National Highway Traffic Safety Administration (NHTSA) discourages the use of auxiliary fuel tanks of any kind due to safety concerns. However, some states, like Texas, allow auxiliary fuel tanks as long as certain requirements are met.
When it comes to gasoline tanks, gravity-fed auxiliary tanks are generally considered illegal. This is because the fuel flows directly from the auxiliary tank to the main tank, which poses safety risks, such as the potential for leaking vapour from the unapproved tank. These safety concerns have led to the illegality of gravity-fed gasoline auxiliary tanks.
However, diesel auxiliary fuel tanks are often exempt from this law. The reason for this exemption is likely due to the difference in flammability between gasoline and diesel. Diesel has a higher flashpoint than gasoline, making it less flammable and reducing the risk of fire or explosion. This distinction in flammability characteristics may be the key factor in the legal exemption for diesel auxiliary tanks.
It is important to note that the legality of auxiliary fuel tanks can vary from state to state in the United States. While some states prohibit auxiliary tanks altogether, others permit them with specific requirements, such as mounting, capacity limits, and labelling. Therefore, it is essential to consult the regulations of the specific state or jurisdiction when considering the use of auxiliary fuel tanks.
To ensure compliance with legal requirements, fuel tanks must adhere to certain standards. They must be clearly marked with the manufacturer's name, manufacture date, gallon size, and a statement indicating compliance with FMCSA requirements. Additionally, the fuel connections, lines, fittings, valves, and connections must be of a specific size to maintain the functionality of the primary fuel system. These requirements are in place to mitigate safety risks and ensure the proper functioning of the fuel system.
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Transfer tanks are different from auxiliary tanks and are legal if not directly connected to the engine fuel system
Transfer tanks are different from auxiliary tanks and are legal if they are not directly connected to the engine's fuel system. Transfer tanks are portable fuel tanks that dispense fuel with a fuel pump, whereas auxiliary tanks are additional fuel tanks connected to the primary system. Transfer tanks are often used to refuel equipment, vehicles, or for long-distance travel, providing convenience, flexibility, and cost savings. They are commonly made from aluminium or steel, with aluminium being lighter and more corrosion-resistant, while steel offers greater strength and durability.
Transfer tanks are available in various sizes and shapes, such as rectangular or L-shaped, to fit different truck bed sizes. They are designed to fit short bed, long bed, and flatbed trucks, with specific measurements ensuring a proper fit. Transfer tanks also come with different fuel capacities, ranging from 40 to 109 gallons, depending on the user's needs. Some tanks even offer multiple compartments to hold different types of fuel.
The legality of transfer tanks varies across regions, and it is important to check the specific regulations in your area. In the United States, transfer tanks must comply with Department of Transportation (DOT) regulations and be DOT-approved. Additionally, transfer tanks should be clearly marked with the manufacturer's name, manufacture date, gallon size, and compliance with FMCSA requirements.
It is worth noting that the National Highway Traffic Safety Administration (NHTSA) discourages the use of auxiliary fuel tanks due to safety concerns. However, transfer tanks, when used as intended, can provide a safe and legal means to carry additional fuel. Transfer tanks are particularly useful for individuals and businesses in construction, agriculture, or other industries that rely on heavy equipment, as they reduce downtime spent refuelling.
When choosing a transfer tank, it is essential to consider factors such as tank material, size, fuel type, and any customisation options. Additionally, ensuring proper installation and compliance with local regulations is crucial to maintain safety and legality.
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Auxiliary fuel tanks are subject to California's anti-tampering laws and must be certified by the Air Resources Board
Auxiliary fuel tanks are subject to California's anti-tampering laws. The installation of such tanks on emission-controlled vehicles is prohibited unless they have been evaluated and certified by the Air Resources Board. This means that any modifications made to a vehicle during the installation of an auxiliary fuel tank render it subject to these laws.
In general, the National Highway Traffic Safety Administration (NHTSA) discourages the use of auxiliary fuel tanks due to the risks of fire and explosion posed by improper manufacture or installation. The NHTSA will be issuing a press release to warn consumers of these dangers and discourage the use of such tanks. The NHTSA's Fuel System Integrity testing, which utilises FMVSS 301 standards, is an important safety measure for the manufacture and use of auxiliary fuel tanks.
Transfer Flow Inc., a company that designs, manufactures, and installs aftermarket and original equipment gasoline and diesel auxiliary fuel systems, has invested significant resources to ensure compliance with regulatory agencies and maintain engineering best practices. They supply a DOT Special Permit with every refueling tank, which must be carried by each vehicle using a refueling tank. However, the legality of gravity-fed systems remains unclear due to DOT ambiguity. Safety and legality concerns have led Transfer Flow Inc. to refrain from endorsing or promoting the design, installation, or use of on-road gravity-fed auxiliary fuel systems.
It is important to note that the legality of auxiliary fuel tanks may vary depending on the state and federal regulations. For example, a CHP officer in California mentioned that an 8-gallon auxiliary gasoline tank is the legal limit, while a 55-gallon drum is permitted for diesel. Additionally, some auxiliary fuel tanks are approved by the California Air Resources Board, as listed on their website.
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Frequently asked questions
A transfer tank is a container that you fill with fuel but cannot operate the engine directly from. The fuel must be transferred to the main tank first. An auxiliary tank has the plumbing to run the engine directly from the tank without having to transfer fuel to the main tank first.
The tank must be clearly and permanently marked with the manufacturer's name, manufacture date, gallon size, and the statement "Meets all FMCSA requirements for non-side mounted fuel tank", and "not to exceed 95% of capacity". The fuel connections from the auxiliary fuel tank to the primary system, including a selection control valve, shall not render inoperative any of the functions of the primary system.
The National Highway Traffic Safety Administration discourages the use of auxiliary fuel tanks due to the grave dangers of fire and explosion posed by their improper manufacture or installation.
