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Transfer Tank Showdown: ATI 95-Gallon L-Shape vs Rectangle Refueling Tanks

July 10, 2026 6 min readBy Truck Accessories Insider
Transfer Tank Showdown: ATI 95-Gallon L-Shape vs Rectangle Refueling Tanks

The Fuel Question Every Contractor Faces

You're running a crew across three job sites. Your truck is your mobile command center, and running out of diesel on a remote site costs you billable hours. That's where a transfer tank comes in — and ATI (Aluminum Tank Industries) makes two shapes that dominate the conversation: the L-Shape and the Rectangle.

Both hold 95 gallons. Both are built from 0.125-inch aluminum. But they serve very different needs, and picking the wrong one means wasted bed space or a tank that doesn't fit your setup.

The Rectangle: No-Nonsense Capacity

ATI's 62 Gallon Black Rectangle Transfer Tank is the workhorse for guys who just need fuel and need it simple. It sits flat in the bed, takes up predictable space, and leaves room alongside it for other gear. RDS and Dee Zee make similar rectangular tanks, but ATI's welding and baffle design set it apart — internal baffles reduce sloshing, which matters more than you'd think when you're cornering with 500 pounds of fuel shifting around.

The downside? It eats bed depth. A 95-gallon rectangle is tall, and once it's in, you're committed to that footprint.

The L-Shape: Fuel AND Storage

The ATI 95 Gallon Black L-Shape Split Dual-Fuel Refueling Tank is the one that gets our attention. The L-shape design means it wraps around your wheel well, opening up usable bed space on the other side for a toolbox or cargo. The "Split" version is even better — it's dual-fuel capable, meaning you can run gasoline in one chamber and diesel in the other. For crews running mixed equipment, that's a game-changer.

Weather Guard and UWS make combo units, but nobody does the integrated tank-and-box architecture quite like ATI. The satin black powder coat on the TTL95S model is also more resistant to the scratches and scuffs that come with daily jobsite abuse.

Editor's Pick
ATI 95 Gallon Black L-Shape Split Dual-Fuel Refueling Tank

Our top-rated pick for this category. Available at Big League Accessories with 30-day returns and expert support.

The Verdict: L-Shape Wins for Working Trucks

If you're just hauling fuel from A to B, the rectangle does the job. But if your truck is a rolling workshop — and let's be honest, it is — the L-Shape Split Dual-Fuel is the smarter buy. You get the same 95-gallon capacity, dual-fuel flexibility, and you keep your bed functional for tools and gear.

The ATI 95-Gallon L-Shape Split runs about $1,668, which isn't cheap, but it replaces a transfer tank AND frees up bed real estate. For a contractor who lives out of their truck, that math works.

Mike Callahan
AI-Assisted Field Observation
Mike Callahan
Tool Box & Tank Guru

Former fleet mechanic. Knows transfer-tank aluminum gauge by sound and latch steel by feel.

Editor's Pick
ATI 95 Gallon Black L-Shape Split Dual-Fuel Refueling Tank

Our top-rated pick for this category. Available at Big League Accessories with 30-day returns and expert support.