Best Aluminum Auxiliary Diesel Fuel Tanks for Trucks and RVs
Aluminum auxiliary diesel fuel tanks are built to increase range and reduce fuel stops for work trucks, fleets, and long-haul adventures. This guide highlights five top aluminum tanks, focusing on capacity, durability, and installation considerations. Each product section provides key features and practical insights to help you compare options at a glance.
Summary of chosen products
| Product | Capacity | Material | |
|---|---|---|---|
| RDS MFG INC Rectangular Auxiliary/Transfer Fuel Tank – 45 Gallon | 45 Gal | Aluminum | Auxiliary storage with electric pump transfer |
| RDS MFG INC Fuel Tank – 60-Gallon | 60 Gal | Aluminum | Auxiliary fueling via top-siphon with pump |
| Landrol 58 Gallon Aluminum Fuel Cell Tank Rectangular | 58 Gal | Aluminum | Transportation-ready auxiliary storage |
| RDS MFG INC Rectangular Auxiliary Fuel Tank – 69 Gallon | 69 Gal | Aluminum | Gasoline auxiliary fueling via top-siphon |
| RDS Aluminum Auxiliary Transfer Fuel Tank – 200 Gallon | 200 Gal | Aluminum | High-capacity transfer and storage |
When selecting an aluminum auxiliary diesel tank, consider fitment with your vehicle, mounting access, and the presence of features like sight gauges, baffles, and clean-out ports. The following sections review five practical options, each with their notable strengths.
RDS MFG INC Rectangular Auxiliary/Transfer Fuel Tank
The 45-gallon model is designed for flexible mounting in trucks or utility vehicles. It features fully welded seams for durability and is compatible with electric fuel pumps for top-siphon transfers, enabling smooth auxiliary fueling. A compact footprint makes it suitable for shorter bed configurations, while the robust aluminum construction helps resist corrosion in harsh environments. RDS emphasizes a full range of tank options to fit varied needs, making this a solid entry for light-to-medium auxiliary fuel uses.
RDS MFG INC Fuel Tank – 60-Gallon
With a 60-gallon capacity, this aluminum tank aims to extend driving range for long trips or demanding workdays. It supports gasoline auxiliary fueling via top siphoning and electric pump, making transfer straightforward. The product notes highlight compatibility considerations—measure your vehicle’s bed length to ensure fit—and emphasize the availability of varied capacity options from the same manufacturer, which can simplify upgrading or matching existing tanks.
Landrol 58 Gallon Aluminum Fuel Cell Tank Rectangular
Landrol’s 58-gallon rectangular fuel cell balances capacity with a compact footprint. It’s positioned as a versatile option for transportation trucks, offering a larger storage option without excessive length. The description cites a newer iron/mixed material approach to weight and quality control, and notes easy cleaning—beneficial for fleets seeking durable, serviceable auxiliary tanks that stand up to rugged conditions and frequent maintenance.
RDS MFG INC Rectangular Auxiliary Fuel Tank – 69 Gallon
The 69-gallon model emphasizes a practical size for extended runs while maintaining a manageable installation footprint. It supports gasoline auxiliary fueling via top siphon and electric pump. Product dimensions (57.0″ L x 18.0″ W x 16.0″ H) imply a relatively slim profile that can fit within narrower bed spaces. The 69-gallon option suits mid-to-high-range needs, offering ample capacity without overextending chassis accommodations.
RDS MFG INC Fuel Tank Tool Combo – 60 Gallon
Fuel tank tool kits can streamline installation and maintenance. The 60-gallon tank in this combo supports gasoline auxiliary fueling via top siphon with an electric pump, like other RDS models. Note contains a caveat: not intended for gasoline in some contexts. This product combination may be useful for users seeking a bundled set that includes mounting hardware or accessories alongside the fuel tank, potentially simplifying installation.
RDS Aluminum Auxiliary Transfer Fuel Tank – 200 Gallon
For high-demand operations, the 200-gallon aluminum transfer tank offers substantial capacity. It includes features like a sight gauge for fuel level visibility and a 6-inch inspection clean-out port to simplify maintenance. A baffled design helps minimize fuel sloshing during transit, which can improve vehicle handling and predictability in motion. The large size is suited for fleets or long-haul scenarios where frequent refueling is impractical.
Buying Guide: Key Considerations for Aluminum Auxiliary Tanks
- Capacity vs. space: Choose a tank that fits your truck bed, underbody space, and hitch configuration without overburdening the chassis.
- Mounting and brackets: Verify compatibility with existing brackets or plan for durable aluminum mounting hardware to avoid deformation.
- Materials and corrosion resistance: Aluminum tanks resist corrosion, but ensure proper seals and coatings for prolonged exposure to fuel and road grime.
- Fuel compatibility: Most listed tanks support gasoline and diesel, but always confirm the intended fuel and the top-fill or bottom-fill arrangement.
- Slosh control and sight gauges: Baffles reduce fuel movement; sight gauges help monitor levels without removal.
- Maintenance access: Clean-out ports and accessible fittings simplify routine inspections and cleaning.
- Installation considerations: Some tanks require professional fitting, especially high-capacity units or custom bed configurations.
- Warranty and service: Check manufacturer warranty terms and availability of replacement parts or accessories.
Across these options, aluminum construction provides a balance of weight, durability, and corrosion resistance. When selecting, consider your vehicle’s bed length, mounting points, and operational needs—whether you prioritize compact footprint, large capacity, or ease of maintenance.