D.O.T. Compliant

Haul bulk diesel legally and safely without a commercial license with our new multi-tank DOT approved fuel trailers for sale in Caldwell, Boise, Nampa, and Meridian at Riverside Trailers Caldwell. Featuring the industry-leading Boss Trailers MT series, these units are engineered for commercial contractors, fleet operations, and large farms across the Treasure Valley. Browse our available multi-tank inventory below, or visit our Caldwell lot off 21st Ave to upgrade your mobile refueling setup today. Note: These multi-tank systems are strictly rated and certified for diesel fuel only.

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Legally Haul Bulk Fuel Without a Hazmat Endorsement: The Boss MT Series

For commercial excavation crews, hotshotters, and agricultural operators throughout the Treasure Valley, transporting bulk fuel to remote job sites can be a regulatory nightmare. Standard single-tank trailers over 119 gallons require a Commercial Driver’s License (CDL), costly Hazmat endorsements, strict placarding, and specialized insurance. At Riverside Trailers Caldwell, we supply the Treasure Valley with the ultimate loophole: Boss Multi-Tank (MT) Fuel Trailers. Fully DOT-approved for highway use down I-84, these innovative systems utilize independent, federally compliant 110-gallon tanks connected by a common manifold system, allowing you to haul up to 880 gallons of fuel completely legal for any driver in your crew. Please Note: This regulatory exemption applies specifically to Class 3 combustible liquids, meaning these trailers are for diesel fuel only and cannot be legally used to haul gasoline.

The Multi-Tank Advantage: No CDL, No Placards, No Hassle for Diesel Haulers

Opting for a Boss MT-series trailer provides massive operational advantages and cost savings for local businesses and fleet managers in Caldwell, Boise, Nampa, and Meridian counties:

• The 119-Gallon Rule Solved: Because Department of Transportation (DOT) regulations govern the size of the individual container rather than the total aggregate volume, individual 110-gallon diesel tanks remain safely under the legal threshold requiring a Hazmat placard.
• Ultimate Fleet Flexibility: Any employee with a standard driver's license can safely and legally hook up your multi-tank diesel trailer and drive it to the field, eliminating the need to hire specialized CDL drivers just to keep your equipment running.
• Smooth Highway Towing: By dividing the diesel into independent 110-gallon cells, liquid sloshing is naturally minimized. This provides superior towing stability and balanced braking when traveling at highway speeds past the windy Snake River Canyon.

Choose Your Capacity: Boss MT-440, MT-660, & MT-880 Diesel Systems

We stock a versatile range of Boss multi-tank configurations configured precisely for the size of your the Treasure Valley operation:

• Boss MT-440 (Diesel Only): Featuring four 110-gallon tanks for a total of 440 gallons of diesel capacity. Compact, highly maneuverable, and perfect for mid-sized construction crews and utility fleets.
• Boss MT-660 (Diesel Only): Equipped with six 110-gallon tanks totaling 660 gallons. A popular choice for commercial farming operations that need a substantial diesel reserve for multiple tractors or combines.
• Boss MT-880 (Diesel Only): The heavy-haul champion, utilizing eight 110-gallon tanks to legally transport a massive 880 gallons of diesel fuel directly to heavy excavators, scrapers, or remote field equipment.

Premium Features & High-Demand Upgrades

Our DOT-approved multi-tank diesel inventory can be fully customized with commercial-grade upgrades to simplify your field refueling process:

• DEF-Ready Packages: Effortlessly meet Tier 4 emissions standards by adding an integrated 50-gallon to 90-gallon stainless steel DEF system, complete with its own 12V pump, digital flow meter, and auto-shutoff nozzle alongside your diesel setup.
• High-Flow Refueling Pumps: Choose between heavy-duty 20 or 25 GPM 12V electric pumps, or upgrade to a commercial 30 to 45 GPM Kohler electric-start gas engine pump kit to fill massive equipment reservoirs in minutes.
• Advanced Power Systems & Cabinets: Secure your pumping systems inside a massive, lockable front enclosure featuring built-in tool chests and storage drawers. Keep your deep-cycle batteries charged in remote areas by opting for integrated solar panel chargers and automatic hose reels.

Visit Riverside Trailers Caldwell in Caldwell, ID Today

Don't let complex fuel regulations slow down your crew's productivity. Riverside Trailers Caldwell makes buying a DOT-compliant multi-tank diesel trailer straightforward and hassle-free. Our dealership is conveniently located at 321 N 21st Ave in Caldwell, ID—making us an easy, convenient drive across the canyon for our Boise neighbors. Call our local trailer experts today at 208-459-2030 to check current Boss MT inventory availability, or stop by our lot to hook up and haul today!