How many gallons of gas does a 2000 F-150 with extended cab tank hold?
A 2000 Ford F-150 extended cab's fuel tank capacity depended on the engine and configuration. It could hold either 26 or 36 gallons. There's no single definitive answer without knowing the specific trim level and engine of the truck. You'll need to check the owner's manual or the fuel filler door to know for certain.