There are times when your work or leisure activities might take you a fair distance away from the closest gas station. If you find yourself frequently exploring off-road trails, working on a large farm property or making long-distance drives through isolated areas, then you are probably all too familiar with that sinking feeling in the pit of your stomach as you nervously eye the fuel gauge nearing empty. While it is always a good idea to carefully plan fuel stops along a long drive, not every eventuality can be planned for, and this can introduce a degree of uncertainty when it comes to fuel consumption.

Extend the range of your truck with a bigger fuel tank.
Fortunately, there are a few options available to extend the range of your Toyota Tundra. The first is a unique accessory from Transfer Flow that serves as both a backup fuel tank and a tool box. Designed to install in the bed of your truck, the combo tank / tool box offers an additional 30 gallons of gasoline storage as well as room for your tools. The tool box is made of 14 gauge steel and of course locks to protect your equipment. The filling point for the tank is also kept inside the locked compartment to prevent others from siphoning off your fuel while your vehicle is parked overnight.

Combination fuel tank tool box for the Toyota Tundra.
What is perhaps most appealing about the Transfer Flow tank / box is that it makes use of a special software-controlled fuel management system that automatically engages the fuel pump in the unit once the stock tank on your truck hits the halfway mark. Instead of drawing fuel directly from the auxiliary tank to the engine, the tank’s contents are transferred to your standard fuel tank in order to replenish to the ¾ level. This eliminates the need to fumble under the seat for a switch to flip and engage the extra tank as was the case with so many old fashioned factory setups.
For those who are not interested in crowding the cargo area of their Tundra with an extra tank, Transfer Flow also offers a direct factory replacement tank that swaps out the stock 26 gallon tank for a much larger 47 gallon unit. While not quite as range-extending as the additional 30 gallon in-bed device, the installation of the still large tank offers an impressive volume of extra gasoline to ease your mind on extra-long journeys. The tank is crafted from aluminized steel and is specifically intended to resist corrosion as well as or better than the Toyota tank. The hardware inside the stock tank is re-used, and the larger unit comes with its own installation kit that includes all the necessary mounting pieces.
Each of these tanks offers excellent range and a quality design, and the versatility that they provide for the Tundra helps to add an extra dimension to your driving – whether it is primarily eating up highway miles or munching down the dirt and mud far away from home. The extra fuel you can pack with these products means it’s a lot harder to get stranded because you ran out of gas.
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I wonder how the computer manages the extra capacity, does it work with a fuel tank like this?