What Is a Land Cruiser Double Fuel Tank Setup?
Some Toyota Land Cruiser models are equipped with a double fuel tank setup, also known as a dual or sub tank system. This design provides extra fuel storage, extending range and improving convenience for drivers who travel long distances or operate in remote areas.
How the Double Tank System Works
- Main Tank – The primary tank that directly feeds the engine.
- Sub Tank – A secondary tank, usually 30 to 60 liters in size, used to store extra fuel.
- Fuel Transfer – Controlled via a cabin switch or automatic system that pumps fuel from the sub tank into the main tank.
- Indicators – A dedicated gauge or warning light shows sub-tank levels and transfer status.
Benefits of a Double Tank Setup
- Extended Range – Reduces the need for frequent refueling on long trips.
- Safety – Eliminates the need for carrying external fuel cans, which can be hazardous in accidents.
- Better Weight Distribution – Keeps fuel low and centrally located compared to roof or rear‑mounted containers.
- Convenience – Transfers fuel on demand without stopping or exiting the vehicle.
Land Cruiser Models with Factory Dual Tanks
- 70 Series – Common in Troop Carriers, pickups, and wagons in markets like Australia, Africa, and the Middle East.
- 80 Series – Select export models with ~50L sub tanks.
- 100 Series – Diesel versions in some regions.
- 200 Series – Certain off-road-focused trims.
- 300 Series – Heavy‑duty variants in specific markets.
Aftermarket Options
If your Land Cruiser does not have a factory dual tank, companies like Long Range Automotive (LRA), ARB, and Front Runner offer auxiliary tank kits that integrate with the factory fuel system, adding 30 to 100 liters of capacity.
A Land Cruiser double fuel tank setup offers increased range, added safety, and improved convenience for off‑road and long‑distance travel. If factory‑fitted or installed aftermarket, it is one of the most useful upgrades for serious adventurers and overlanders.