A Fuel Tank represents the energy your tank squad currently has. Every battle you take in PVE or PVP mode will consume Fuel. When your fuel runs out, you will have to wait until your fuel tank refills so you can put your tanks into actions again. Or you can spend your $GEAR token to accelerate this process.
It would cost you 4 FEULs upon winning a battle. No FUELs deducted if failed or quit
1 FUEL will be replenished every 18 minutes. The maximum is 20.