Titan Equipment Leasing maintains one of the largest DOT 406 fuel tanker trailer fleets available for lease in North America, with over 1,100 trailers deployed across 12 service locations in the United States and Canada. Our MC 306/DOT 406 specification trailers are purpose-built for the safe transport of petroleum products and flammable liquids, featuring aluminum barrel construction that delivers significant weight savings over steel while providing excellent corrosion resistance for fuel service.

Our DOT 406 fleet includes single-compartment and multi-compartment configurations ranging from 6,000 to 9,500 gallons, supporting everything from single-product delivery runs to multi-grade fuel distribution. Whether you operate a regional petroleum distributor handling gasoline and diesel deliveries or manage a large-scale fuel logistics operation, Titan provides inspection-ready, compliant trailers backed by responsive service and flexible lease terms.

DOT 406 trailers (formerly designated MC 306) are the standard specification for transporting flammable liquids at low pressure in the United States. The specification mandates an elliptical or modified-oval cross-section barrel constructed from aluminum alloy, which reduces tare weight by roughly 3,000 to 4,000 pounds compared to steel alternatives. This weight advantage translates directly into increased legal payload per load.

Multi-compartment DOT 406 trailers allow carriers to transport multiple fuel grades on a single trip. Two-compartment units are common for diesel and gasoline splits, while three-, four-, and five-compartment configurations support multi-grade gasoline distribution and blended-product routes. Each compartment operates with independent valving, vapor recovery, and emergency shutoffs, allowing safe loading and discharge of different products without cross-contamination.

Bottom-loading capability is standard across Titan’s DOT 406 fleet, enabling faster, safer loading at petroleum terminals equipped with bottom-loading arms. Vapor recovery systems capture displaced vapors during loading operations, meeting EPA Stage I vapor recovery requirements and reducing emissions. Top-loading access is also available for terminals that require gravity or top-fill loading procedures.

DOT 406 trailers are authorized for the transport of flammable and combustible liquids as defined under 49 CFR. The majority of DOT 406 operations involve refined petroleum products, though the specification also covers a range of other flammable liquids. Product compatibility with aluminum construction must be verified for any non-standard commodity, but the most common products transported in DOT 406 equipment include gasoline, diesel fuel, ethanol, aviation fuels, and heating oils.

Multi-compartment trailers are particularly valuable for fuel distributors delivering multiple grades to retail stations in a single trip, reducing deadhead miles and improving route efficiency. Titan can help match compartment configurations to your delivery profile to maximize payload utilization.

Every DOT 406 trailer in Titan’s fleet is maintained to meet or exceed the inspection and testing requirements set by FMCSA and PHMSA under 49 CFR Parts 178 and 180. This includes the annual external visual inspection and leak test required by HM-183 regulations, as well as the comprehensive five-year hydrostatic pressure test that verifies barrel and compartment integrity. Titan manages the inspection cycle for leased equipment, so your trailers remain compliant and road-ready without burdening your maintenance team.

Vapor recovery systems on Titan’s DOT 406 trailers are certified to meet EPA Stage I requirements, preventing the release of volatile organic compounds during loading operations. Each trailer is equipped with internal self-closing stop valves, emergency remote shutoffs, and fusible devices that provide redundant protection in the event of a rollover, fire, or valve failure. Overturn protection devices shield top-mounted fittings from damage during an incident.

Titan also provides documentation support including up-to-date inspection certificates, barrel test records, and equipment specification sheets, making it straightforward to satisfy shipper qualifications, insurance audits, and DOT roadside inspections.

Titan offers DOT 406 fuel tanker trailers under several leasing structures to match your operational requirements and budget. Whether you need a single trailer for a short-term contract or a fleet of multi-compartment units on a multi-year lease, our team will work with you to build a program that fits. Seasonal availability is maintained for peak fuel demand periods, and emergency replacement trailers can be deployed quickly when unexpected downtime threatens your delivery schedule.