Why Do Some Land Cruisers Come With Two Tanks?

Some Toyota Land Cruiser models are equipped with two fuel tanks, a main tank and a secondary “sub tank.” This setup is designed to extend driving range, improve safety, and make long‑distance or remote‑area travel more convenient.

How the Dual‑Tank System Works

• Main Tank – Primary fuel reservoir that feeds the engine directly.
• Sub Tank – Secondary tank, usually 30–60 liters in capacity, used to store extra fuel.
• Fuel Transfer – The driver activates a switch inside the cabin to pump fuel from the sub tank into the main tank.
• Monitoring – Many models include a gauge or indicator light for the sub tank’s fuel level.

Why Land Cruisers Use Two Tanks

Extended Range

Two tanks increase total fuel capacity, allowing drivers to cover hundreds of extra miles without stopping for fuel.

Safer Than Carrying Jerry Cans

Fuel stored inside the vehicle’s designed system is more secure than external containers, reducing fire risk and improving weight distribution.

Better for Remote and Off‑Road Travel

In remote areas with few fuel stations, dual tanks reduce the need to carry extra fuel and provide peace of mind.

Land Cruiser Models with Factory Dual Tanks

• 70 Series – Common in Troop Carriers, pickups, and wagons in Australia, Africa, and the Middle East.
• 80 Series – Some export models with ~50L sub tanks.
• 100 Series – Diesel variants in select regions.
• 200 Series – Certain trims in off‑road focused markets.
• 300 Series – Heavy‑duty configurations in some markets.

Aftermarket Options

For models without a factory sub tank, companies like Long Range Automotive (LRA), ARB, and Front Runner offer auxiliary tank kits that integrate with the existing fuel system, adding 30-100 liters of capacity.

Two‑tank Land Cruisers are built with long‑distance, off‑road, and expedition travel in mind. The dual‑tank system extends range, improves safety, and offers convenience in places where refueling is difficult. If factory‑fitted or added aftermarket, it’s a valuable upgrade for serious adventure travel.