Looking for a reliable gasoline auxiliary fuel tank to extend your range or support transfer tasks? This guide highlights five strong options and explains who each is best for. Whether you need a compact 37–45 gallon unit for a pickup, a larger 69 gallon tank for long trips, or a transfer-tank toolbox combo, you’ll find practical features and clear reasons to choose. The selections emphasize durability, compatibility, and ease of fueling. The buyer’s table below summarizes key points at a glance.
| Product | Best For | Highlights |
|---|---|---|
| RDS MFG INC 71083 Rectangular Auxiliary/Transfer Tank | Medium-range fueling and top-siphon operation | 45 gal, fully welded seams |
| RDS MFG INC Auxiliary Fuel Tank 37Gal | Compact setups with electric pump | 37 gal, top-siphon fueling |
| RDS MFG INC Rectangular Auxiliary Fuel Tank – 69 Gallon | Higher capacity for extended trips | 69 gal, top-siphon fueling |
| Dee Zee DZ92556NSB Transfer Tank | Heavy-duty steel construction | 14-gauge steel, stability features |
| RDS MFG INC Fuel Tank – 60-Gallon | General purpose, bed compatibility | 60 gal, top-siphon fueling |
RDS MFG INC 71083 Rectangular Auxiliary/Transfer Tank
This 45-gallon rectangular tank is designed for auxiliary fueling with top-siphon capability using an electric fuel pump. It features fully welded seams for durability, which helps prevent leaks during transport and fueling. Best for buyers who need a mid-size capacity with a sturdy build for occasional transfer tasks. A potential limitation is that capacity is fixed; plan fuel needs around the 45-gallon mark to avoid overcomplication.
RDS MFG INC Auxiliary Fuel Tank 37Gal
This 37-gallon tank is compact and suitable for smaller pickups or where space is limited. It supports gasoline auxiliary fueling via an electric pump with top siphon. Choose this if you need a lighter, maneuverable option with straightforward installation. Limitations include a smaller capacity compared with larger models, which may require more frequent refueling on long trips.
RDS MFG INC Rectangular Auxiliary Fuel Tank – 69 Gallon
With 69 gallons, this unit suits long-distance applications or heavier fueling needs. It supports gasoline auxiliary fueling via a top-siphon electric pump. Best for buyers planning extended journeys or heavy usage where a larger tank reduces stops. A consideration is that higher capacity adds weight and may require vehicle bed measurements before ordering.
Dee Zee DZ92556NSB Transfer Tank
Constructed from heavy-duty 14-gauge steel, this transfer tank emphasizes ruggedness. Its radius curve reduces weld stress points, and it includes five stability baffles plus a drain plug. This makes it well-suited for professionals who require strong, durable steel tanks for demanding use. Better for those prioritizing structural integrity over lighter aluminum options, with the caveat of higher weight and potential installation complexity.
RDS MFG INC Fuel Tank – 60-Gallon
The 60-gallon option sits in a mid-to-large range and supports gasoline auxiliary fueling via a top-siphon electric pump. It is a versatile choice for users who want a balance of capacity and installation flexibility, with a note to verify bed compatibility and dimensions before purchasing to ensure a proper fit.
Buying Guide
What capacity do I need?
Assess your typical fueling or transfer needs and how often you want to refuel. Choose 37–45 gallons for light duty or day trips, 60 gallons for regular long-haul use, and 69 gallons for extended operations or higher demand.
What construction matters?
Aluminum tanks are lighter and resistant to corrosion, while steel tanks offer durability and rigidity. Steel tanks may be heavier and require more robust mounting. Consider your vehicle’s payload and mounting options.
How is fueling performed?
Many models support gasoline fueling via top siphon using an electric fuel pump. Check for compatibility with your pump setup and ensure you have the proper fittings, hoses, and safety features to prevent spills.
What about installation and space?
Verify bed dimensions, mounting points, and clearance with other components such as toolboxes or cross-beds. Some larger tanks require additional space or reinforcing hardware. Consider whether you need integrated transfer capabilities or standalone tank functionality.
Safety and durability considerations
Look for welded seams and baffle systems that reduce slosh and shift during transport. A drain plug and reinforced mounting features add reliability for real-world use. Consider weather exposure and corrosion resistance in the tank material.
Best-use scenarios
For frequent long trips or work sites with limited refueling, prioritize larger capacities and durable construction. If space is tight or weight is a concern, start with smaller tanks or aluminum options. For heavy-duty professional use, steel transfer tanks with baffles are advantageous.
Quick comparison recap
- Best mid-range option: RDS MFG INC 71083 (45 gal) for balanced capacity and durability.
- Better for compact spaces: RDS MFG INC Auxiliary Fuel Tank 37Gal (37 gal).
- Best for long trips: RDS MFG INC Rectangular 69 Gallon (69 gal).
- Best heavy-duty steel: Dee Zee DZ92556NSB Transfer Tank (steel, 14-gauge).
- Best overall balance: RDS MFG INC Fuel Tank – 60-Gallon (60 gal).
FAQ
- What is a gasoline auxiliary fuel tank used for?
It adds fuel storage or transfer capability to a vehicle, enabling longer trips or easier fueling at remote sites.
- Can I siphon fuel from the top of the tank?
Yes, most models support top-siphon fueling with an electric pump, but verify compatibility with your setup.
- Is aluminum better than steel for these tanks?
Aluminum is lighter and corrosion-resistant; steel is typically more rugged but heavier.
- What should I check before buying?
Capacity, bed compatibility, mounting points, material, and whether a drain plug or baffles are included.
- Do these tanks include transfer pumps?
Some models feature pumps or toolbox combos; others are tanks only. Review product features for specifics.
- How do I prevent spills during fueling?
Choose models with automatic shutoff at the pump and proper venting, and follow standard safe fueling practices.