Why Does the Land Cruiser Have Two Gas Tanks?
Certain Toyota Land Cruiser models are equipped with two gas tanks, a main tank and a sub (auxiliary) tank, to increase fuel capacity. This setup is designed for extended range, making the vehicle better suited for remote travel, heavy‑duty work, and long off‑road expeditions.
Purpose of Two Gas Tanks
- Extended Range – Travel farther between refueling stops, which is vital in remote areas.
- Backup Fuel – The sub tank acts as a reserve in case the main tank runs low.
- Expedition Readiness – Ideal for overlanding, desert crossings, and long‑distance touring where fuel stations are scarce.
How It Works
The engine draws fuel from the main tank. When the main tank’s level is low, the driver activates a switch on the dashboard to transfer fuel from the sub tank to the main tank. An electric pump handles the transfer, and some models feature a separate gauge or warning light for the sub tank.
Models That Commonly Have Two Tanks
- 70 Series – Utility and troop carrier variants in markets like Australia, Africa, and the Middle East.
- 80 Series – Certain non‑U.S. models offered with a factory‑installed sub tank.
- 100/105 Series – Available in select diesel and expedition‑spec configurations.
- Special Utility Versions – Mining, government, and expedition vehicles.