Auxiliary Gasoline Tanks For Pickup Trucks: Extending Your Range and Capabilities

Auxiliary Gasoline Tanks For Pickup Trucks: Extending Your Range and Capabilities pickup.truckstrend.com

Pickup trucks are the workhorses of the automotive world, renowned for their versatility, hauling capacity, and rugged dependability. However, even the most capable truck eventually runs out of fuel. For owners who frequently traverse remote areas, tow heavy loads over long distances, operate commercial equipment, or simply seek greater convenience and fuel independence, an auxiliary gasoline tank can be an indispensable upgrade. These supplemental fuel reservoirs extend a truck’s operational range, reduce the frequency of refueling stops, and offer a crucial buffer in situations where fuel access is limited or expensive.

This comprehensive guide will delve into the world of auxiliary gasoline tanks for pickup trucks, exploring their benefits, types, critical considerations for selection, installation insights, and practical advice to help you make an informed decision.

Auxiliary Gasoline Tanks For Pickup Trucks: Extending Your Range and Capabilities

Why Consider an Auxiliary Gasoline Tank? Unlocking New Levels of Freedom

The decision to install an auxiliary gasoline tank is often driven by a specific need, but the benefits extend far beyond a single application:

• Extended Driving Range: This is the most obvious and primary benefit. Whether you’re embarking on a cross-country road trip, exploring vast wilderness trails, or commuting long distances for work, an auxiliary tank significantly reduces "range anxiety." You can travel further without the constant worry of finding the next gas station, especially in areas with sparse services.
• Enhanced Convenience: Imagine towing a large RV or heavy trailer. Every fuel stop becomes a major maneuver, often requiring unhitching or careful navigation. An auxiliary tank drastically cuts down on these interruptions, allowing for more continuous travel and less time spent at the pump.
• Cost Savings: Fuel prices fluctuate wildly from region to region. With an auxiliary tank, you gain the flexibility to purchase gasoline where it’s cheaper, potentially saving a substantial amount over time, especially for high-mileage drivers.
• Emergency Preparedness: For those living in or traveling through areas prone to natural disasters or power outages, an extra supply of fuel can be a lifesaver, ensuring your truck remains operational for essential tasks or evacuation. It also provides fuel for generators or other necessary equipment.
• Commercial and Agricultural Applications: Contractors, farmers, landscapers, and other professionals often need to refuel equipment on-site (e.g., generators, chainsaws, ATVs). An auxiliary tank transforms your pickup into a mobile fueling station, increasing productivity and reducing downtime.



• Off-Roading and Remote Expeditions: When venturing far off the beaten path, gas stations are non-existent. An auxiliary tank becomes a critical piece of gear, ensuring you have enough fuel to complete your adventure and return safely.

Types of Auxiliary Gasoline Tanks: Finding the Right Fit

Auxiliary gasoline tanks come in various designs and materials, each suited for different needs and truck configurations:

1. In-Bed Transfer Tanks: These are the most common type, designed to sit directly in the truck bed.

   • L-Shaped Tanks: Engineered to fit over the wheel wells, maximizing bed space while still providing substantial fuel capacity (typically 50-100 gallons). They often leave room for a toolbox or other cargo in front of them.
   • Rectangular/Square Tanks: Simpler designs that take up a specific footprint in the bed. They can be placed against the cab, near the tailgate, or wherever space allows.

   

   • Toolbox/Tank Combos: These integrated units combine a storage toolbox with a fuel tank underneath, offering a dual-purpose solution that optimizes bed space.
   • Materials:
     • Aluminum: Lightweight, corrosion-resistant, and visually appealing. A popular choice for its durability and reduced impact on payload.
     • Steel: Heavier and more robust, offering excellent impact resistance. Often coated to prevent rust. Generally more affordable than aluminum.
     • Polyethylene: Lightweight and corrosion-proof, but typically has lower capacities and may not be suitable for all fuel types or extreme conditions. Ensure it’s rated for gasoline.

2. Under-Bed/Frame Mounted Tanks: These tanks are installed underneath the truck, often replacing the spare tire or fitting into available frame voids.

   • Advantages: Frees up bed space entirely, keeps the fuel out of sight, and maintains a lower center of gravity.
   • Disadvantages: Typically smaller capacities (30-60 gallons), more complex and often require professional installation, as they integrate directly with the truck’s main fuel system.

3. Gravity Feed vs. Pump Systems:

   • Gravity Feed: The simplest method, where fuel flows from the auxiliary tank to the main tank via gravity. Requires the auxiliary tank to be mounted higher than the main tank’s fill neck. Slower but reliable and doesn’t require electricity.
   • Pump System: Utilizes a 12V electric pump to transfer fuel. Faster and allows for more flexible tank placement. Essential for larger capacities or when transferring fuel to other equipment. Ensure the pump is rated for gasoline and includes necessary safety features.

Key Considerations Before Purchase: Making the Right Choice

Selecting the ideal auxiliary gasoline tank requires careful thought about your specific needs, truck, and local regulations:

• Capacity: How much extra fuel do you realistically need? Tanks range from 25 gallons to over 100 gallons. Consider your typical trip length, fuel consumption, and desired refueling frequency. Remember that 1 gallon of gasoline weighs approximately 6 pounds, so a 100-gallon tank adds 600 pounds of fuel plus the tank’s weight.
• Material: As discussed, aluminum, steel, and polyethylene each have pros and cons. Aluminum is a popular balance of weight and durability for gasoline.
• Dimensions and Fit: Crucial for in-bed tanks. Measure your truck bed carefully, considering wheel well clearance, bed covers, toolboxes, and any other equipment you carry. For under-bed tanks, professional assessment is vital.
• Fuel Compatibility: This guide focuses on gasoline. Ensure the tank, pump, hoses, and all fittings are explicitly rated for gasoline storage and transfer. Never use a diesel tank for gasoline, or vice versa, due to material and safety differences.
• Installation Method: Will you DIY or hire a professional? Simple gravity-feed tanks can often be installed by a competent DIYer, but systems that integrate with the truck’s main fuel line or require complex wiring are best left to experienced professionals.
• Regulations and Safety: This is paramount.
  • DOT Compliance: Look for tanks that are DOT (Department of Transportation) compliant, ensuring they meet federal safety standards for transporting flammable liquids.
  • Local Laws: Check state and local regulations regarding fuel transfer and storage. Some areas have limits on the amount of fuel you can transport.
  • Insurance: Inform your insurance provider about the modification.
  • Venting and Baffling: Proper venting prevents pressure buildup, and internal baffles prevent fuel sloshing, which can affect vehicle handling.
• Budget: Auxiliary tanks range widely in price based on material, capacity, brand, and features. Factor in installation costs if you plan on professional help.

Installation and Maintenance: Ensuring Safe and Reliable Operation

Installation (General Steps – always follow manufacturer instructions):

1. Safety First: Disconnect the truck’s battery. Work in a well-ventilated area, free from open flames or sparks. Have a fire extinguisher readily available.
2. Mounting: Securely fasten the tank to the truck bed or frame using robust mounting brackets. Ensure it’s stable and won’t shift during driving.
3. Plumbing:
   • Gravity Feed: Connect a fuel line from the auxiliary tank’s outlet to the main tank’s fill neck (often via a specialized adapter). Install a ball valve for flow control.
   • Pump System: Connect the fuel line from the auxiliary tank to the pump, and then from the pump to the main tank or a dispensing nozzle. Install an in-line fuel filter.
4. Wiring (for pump systems): Connect the 12V pump to a fused power source in the truck.
5. Venting: Ensure the tank has a proper vent system to prevent vacuum lock or pressure buildup.
6. Testing: Carefully check all connections for leaks before filling the tank with fuel.

Maintenance:

• Regular Inspections: Periodically check all hoses, fittings, and mounting hardware for wear, damage, or leaks.
• Filter Replacement: If using a pump system, replace the fuel filter regularly as per the manufacturer’s recommendations.
• Cleanliness: Keep the tank exterior clean and free of debris.
• Fuel Rotation: Don’t let gasoline sit in the tank for extended periods (more than a few months) without using it. Gasoline can degrade over time. Use a fuel stabilizer if you anticipate long storage periods.

Potential Challenges and Solutions

While highly beneficial, auxiliary tanks do present some challenges:

• Added Weight: A full auxiliary tank adds significant weight, impacting your truck’s payload capacity, fuel economy (slightly), and potentially handling.
  • Solution: Choose a tank capacity that matches your needs, not just the largest available. Consider upgrading suspension components (e.g., airbags, heavier leaf springs) if you consistently carry heavy loads.
• Reduced Bed Space: In-bed tanks occupy valuable cargo space.
  • Solution: Opt for L-shaped tanks that fit over wheel wells, toolbox/tank combos, or explore under-bed options if bed space is paramount.
• Initial Cost: The investment can be significant.
  • Solution: View it as a long-term investment that offers returns in convenience, extended range, and potential fuel savings.
• Safety and Legal Concerns: Improper installation or non-compliant tanks can be dangerous and illegal.
  • Solution: Always purchase DOT-compliant tanks from reputable manufacturers. Adhere strictly to installation instructions, and consider professional installation. Research local regulations thoroughly.
• Fuel Degradation: Gasoline left in a tank for extended periods can go stale or accumulate condensation.
  • Solution: Use a quality fuel stabilizer, especially for seasonal use. Rotate your fuel supply regularly by using it up and refilling.
• Fuel Transfer Issues: Clogging, airlocks, or pump failures can occur.
  • Solution: Use proper filtration, ensure adequate venting, and invest in a high-quality pump. Carry spare filters and basic tools.

Auxiliary Gasoline Tanks: Estimated Price Guide

Please note: Prices are estimates and can vary significantly based on brand, specific features, material thickness, market conditions, and retailer. Installation costs are additional.

Tank Type	Material	Capacity Range (Gallons)	Key Features	Estimated Price Range (USD)	Notes
In-Bed Transfer	Aluminum	25 – 100	L-shaped or Rectangular, lightweight, rust-proof	$400 – $1,200	Popular for versatility, can be gravity or pump-fed.
	Steel	30 – 100+	Heavy-duty, durable, often lower cost	$300 – $900	Stronger, but heavier and prone to rust if not coated.
	Polyethylene	25 – 60	Lightweight, corrosion-resistant, translucent	$250 – $600	Often used for non-flammable liquids; ensure gasoline compatibility.
Toolbox/Tank Combo	Aluminum / Steel	40 – 75	Combines storage with fuel capacity	$700 – $1,500	Maximizes bed space efficiency.
Under-Bed Mounted	Steel / Aluminum	30 – 60	Out of sight, frees up bed space, integrated	$800 – $2,000+	Requires professional installation, complex integration with fuel system.
Pump Kits (Add-on)	N/A	N/A	12V Electric Pump, Hoses, Nozzles	$150 – $500	Essential for efficient transfer from transfer tanks.
Installation Costs	N/A	N/A	Professional labor, custom fabrication	$200 – $1,000+	Varies greatly by complexity and shop rates.

Frequently Asked Questions (FAQ)

Q1: Are auxiliary gasoline tanks legal?
A1: Generally, yes, but regulations vary by state and local jurisdiction. Always ensure the tank is DOT-compliant and check specific laws regarding fuel transfer and maximum portable fuel quantities in your area.

Q2: Can I install an auxiliary tank myself?
A2: For simpler gravity-feed systems, a mechanically inclined individual might manage. However, systems that integrate with the truck’s main fuel line, require complex wiring, or involve cutting into the vehicle’s structure are best left to certified professionals to ensure safety and compliance.

Q3: Will an auxiliary tank void my truck’s warranty?
A3: It could if the installation directly causes a failure of a warranted component. For instance, improper integration with the fuel system or electrical system could void related warranty coverage. Always check with your dealership or manufacturer if concerned.

Q4: What’s the difference between a gasoline and diesel auxiliary tank?
A4: While they look similar, gasoline and diesel tanks have critical differences in material compatibility, venting requirements, and pump types due to the different flammability and chemical properties of the fuels. Never use a tank designed for one fuel type for the other.

Q5: How much weight does an auxiliary tank add to my truck?
A5: The tank itself adds weight (e.g., an aluminum 100-gallon tank might weigh 100-150 lbs empty). Gasoline weighs approximately 6 pounds per gallon. So, a 100-gallon tank full of gasoline adds around 700-750 lbs to your truck’s payload.

Q6: Do I need a special pump for gasoline?
A6: Yes. If you choose a pump system, it must be a 12V electric pump specifically rated for gasoline. These pumps are designed to prevent static electricity buildup and are sealed to prevent ignition of fuel vapors, unlike pumps designed for diesel or water.

Q7: How do I prevent fuel in the auxiliary tank from going bad?
A7: Use a high-quality fuel stabilizer, especially if the fuel will sit for more than a few weeks. It’s also advisable to regularly rotate your fuel supply by using the auxiliary tank’s fuel and refilling it, ideally every 2-3 months.

Conclusion

An auxiliary gasoline tank is a transformative addition for many pickup truck owners, offering unparalleled freedom, convenience, and peace of mind. By extending your vehicle’s range, reducing refueling stops, and providing an emergency fuel supply, it enhances the utility and capabilities of your truck whether for work, travel, or recreation.

While the initial investment and the need for careful consideration regarding capacity, material, and installation are real, the long-term benefits often far outweigh these factors. Prioritizing safety, adhering to regulations, and choosing a reputable product are paramount to a successful and beneficial upgrade. With the right auxiliary tank, your pickup truck will be ready to tackle longer journeys, more remote destinations, and more demanding tasks, truly becoming the ultimate companion for any adventure or job.