Is the Toyota Land Cruiser Sub Tank Worth It?
What the Sub Tank Does
A sub-tank in a Toyota Land Cruiser is an auxiliary fuel tank that works alongside the main tank. It allows the vehicle to carry more fuel, often adding 15 to 25 extra gallons, depending on the model and configuration. The sub tank can either feed fuel directly to the engine or transfer it into the main tank via a pump system.
Benefits of a Sub Tank
Extended Range
With a sub tank, you can travel farther without refueling. This is especially helpful for overlanding, remote off-road routes, or regions with long distances between fuel stations.
Fuel Security
If the main tank develops a leak or mechanical problem, the sub tank offers a backup fuel source to keep you moving.
Convenience
- Reduces stops during long trips
- Avoids the need to carry external fuel cans
- Ideal for towing, hauling, and heavy off-road use where fuel consumption is higher
Potential Drawbacks
- Weight – The extra fuel and tank add weight, which can slightly impact handling and efficiency
- Cost – Factory or aftermarket installations can be expensive, especially if retrofitting an older Land Cruiser
- Maintenance – Additional fuel lines, pumps, and sensors mean more parts that require occasional service
Is It Worth It
A Toyota Land Cruiser sub tank is worth it if you frequently drive long distances, travel off-road in remote areas, or want a reliable backup fuel supply. For drivers who mainly use their Land Cruiser in urban settings with easy access to gas stations, the benefits may not outweigh the cost and added complexity.