Is a Land Cruiser Sub Fuel Tank Worth the Upgrade?
A Land Cruiser sub fuel tank can be a valuable upgrade for drivers who need extended range and greater fuel security. It serves as an auxiliary fuel storage system that works alongside the main tank, giving the vehicle increased capacity for long trips, off-road adventures, or remote expeditions.
Main Benefits of Adding a Sub Fuel Tank
- Extended driving range – Increases total fuel capacity, allowing for fewer refueling stops.
- Backup fuel source – Provides a reserve in case the main tank runs low when far from fuel stations.
- Convenience for expeditions – Ideal for overlanding and travel in regions with limited fuel availability.
How It Works
- Consists of a secondary tank installed alongside the main tank.
- Fuel from the sub tank is transferred to the main tank through a pump or gravity feed system.
- Many setups have a cabin switch and a dashboard gauge to monitor sub-tank levels.
Situations Where It’s Most Useful
- Remote travel – Necessary for trips in isolated areas where fuel stations are scarce.
- Long-distance towing – Reduces the need for frequent stops during extended hauls.
- Emergencies – Provides peace of mind during detours, delays, or unexpected conditions.
Points to Consider Before Upgrading
- Installation may require professional fitting and modification to the vehicle’s fuel system.
- Extra weight from additional fuel can affect handling and fuel economy slightly.
- Maintenance is important – regularly check the transfer pump, hoses, and seals for wear.
A Land Cruiser sub fuel tank is worth the upgrade for drivers who travel long distances, explore remote terrain, or want the reassurance of having extra fuel capacity. For those who use their Land Cruiser for daily city driving, the upgrade may be less important but still beneficial in certain situations.