Best 100 Gallon Auxiliary Diesel Tank Options for Worksites and RVs

Choosing a 100 gallon auxiliary diesel tank involves balancing portability, durability, compatibility, and safety. This guide highlights five relevant options, clarifying who each is best for and why it stands out. Ideal buyers include fleet managers seeking rugged steel tanks, contractors needing lightweight aluminum, and off-road enthusiasts requiring integrated features like tool storage. The following table summarizes key details to compare at a glance.

Product Material Approx. Capacity Ideal For Notes
95 Gallon Transfer Refueling Tank Aluminum (0.125″ thick) 95 gallons Users needing DOT-approved, versatile fuel compatibility DOT permit; suitable for gas, diesel, methanol, kerosene, aviation fuel
Tradesman 83010T 100-Gallon Tank Steel 100 gallons Those seeking a premium, exterior steel tank for trucks Full-size rectangular, white finish
Trailfx 100 Gallon Rectangle Tank Aluminum tread plate 100 gallons Users needing rugged construction and vented design Lockable cap, recessed drain, venting
UWS L-Shape 100 Gal Tank Steel with integrated toolbox 100 gallons On-site vehicles that need extra storage Rigid Core lid; built-in toolbox
TTL100 L-Shape Refueling Tank Steel 100 gallons Durable, US-made option Compact L-shape; US origin

95 Gallon Transfer Refueling Tank — DOT Approved

95 Gallon Transfer Refueling Tank image

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This aluminum tank is described as DOT approved and legal for gas, diesel, methanol, kerosene, aviation fuel, and other liquids. It is made from 0.125-inch-thick aluminum diamond plate, offering a balance of durability and lighter weight. Best for buyers needing a versatile, transportable option with broad liquid compatibility. Better for sites prioritizing weight savings and corrosion resistance. Caution: aluminum construction may require careful handling to avoid dents that could impact seals or fittings.

Tradesman 83010T 100-Gallon Steel Tank

Tradesman 83010T 100-Gallon Tank image

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This full-size rectangular steel tank is designed for rugged exterior use on trucks. It’s ideal for buyers who want a sturdy, high-capacity metal option with a clean exterior appearance. Choose this for durability in harsh environments. Better for heavy-duty workloads and long-term outdoor exposure. Limitation: being steel, it may weigh more and could require protective coatings to resist corrosion in some climates.

Trailfx Trail FX 37024151 100 Gallon Tank

Trailfx 100 Gallon Rectangle Tank image

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Trailfx’s 100-gallon rectangle tank emphasizes ease of fuel transfer with heavy-duty aluminum tread plate. It includes a lockable cap, venting, and a recessed drain plug. Best for users needing a robust, corrosion-resistant aluminum option with secure access. Better for ongoing fueling operations where spill containment at the cap is important. Caution: aluminum construction may require attention to mounting hardware to prevent loosening over time.

UWS L-Shape Transfer Tank 100 Gal Black

UWS L-Shape 100 Gal Tank image

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This model combines diesel transfer capability with a built-in toolbox, maximizing truck bed usefulness without sacrificing storage. It is best for crews needing on-vehicle storage plus fuel capacity. Better for work trucks that require a compact, integrated solution. Limitation: toolbox space reduces interior tank dimensions slightly, so ensure capacity needs align with external storage.

TTL100 L-Shape Refueling Tank — 100 Gallons

TTL100 L-Shape Refueling Tank image

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This 100-gallon L-shaped steel tank is marketed as an auto accessory with US origin. Best for buyers seeking a durable steel option with an integrated L-shape design that fits specific vehicle layouts. Better for installs that require compact dimensions and straightforward mounting. Caution: external dimensions should be verified against vehicle fitment before purchase.

Buying Guide

  • Material considerations: Aluminum tanks are lighter and corrosion-resistant, ideal for portable setups. Steel tanks offer maximum durability for heavy-duty use but add weight and potential need for rust protection.
  • Shape and mounting: L-shaped tanks save bed space and can integrate with tool storage, while rectangular tanks may offer more internal volume for the same footprint.
  • Compatibility and safety: If you may transport various fuels or liquids, confirm approved contents and necessary permits. DOT-approved options provide regulatory clarity for certain uses.
  • Ventilation and fittings: Look for venting, lockable caps, and drainage features to minimize spills and simplify maintenance.
  • On-vehicle integration: Consider whether you need built-in storage (toolboxes) or extra side features that affect installation and accessibility.
  • Installation considerations: Check mounting points, weight distribution, and compatibility with your vehicle frame or trailer.

Frequently Asked Questions

  • What is the main difference between aluminum and steel tanks? Aluminum is lighter and corrosion-resistant, while steel offers greater durability and may be better for harsh environments.
  • Are these tanks legal for all fuels? Some models are DOT-approved and designed for specific liquids; verify the product’s stated compatibility before use.
  • Do these tanks come with built-in storage? Some models include a toolbox or extra compartments, which can save space but reduce internal tank capacity.
  • How should I mount a 100-gallon tank? Follow vehicle manufacturer guidelines and use appropriate brackets, gaskets, and mounting hardware to ensure stability.
  • Is venting essential for fuel tanks? Yes, proper venting prevents pressure buildup and helps safe fueling operations.
  • What should I consider when choosing a tank for off-road use? Prioritize durability, weight, and mounting compatibility with off-road vehicles and trailers.