# Fuel System
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**External Fuel Tanks are only available on the A1-H Variant.** AD-3W and AD-4W Variants do not support external fuel tanks at this time.
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The Skyraider carries fuel primarily in a single internal tank with a total capacity of **380 gallons**. For extended range operations, the aircraft can also be fitted with up to **three external drop tanks**, each capable of holding an additional **300 gallons** of fuel.
These external tanks are fully optional and can be equipped or removed using the same in-sim Loadout Worktable employed for managing weapons and stores. More information here: [Weapons Systems](/miltech-simulations-skyraider/aircraft-and-systems/weapons-systems.md#loading-and-deploying-weapons)
Active Fuel Tank can be selected using the handle located on the left side of the cockpit. Please note that it takes a few seconds for fuel to start flowing from the new tank when it has been switched.
The Fuel Quantity Gauge on the right side of the front panel displays the total fuel quantity, in Pounds. Please note that there is no gauge displaying fuel quantity per individual tank, so you must monitor closely the quantities while flying to avoid starving your engine. You may use the Skyraider Loadout worktable to monitor fuel quantity of each tank individually.
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