7d265d94_tional_Modules_and_Consumables__Consumable
[Auto-Activate] Auto activated at battle start. [Price] 50 gold [Comments] You can make your own conclusions about this. For me, its not a very useful item. For German and US gasoline engines only. Auto-activated at beginning of battle, so it is always consumed after the battle. [Consumable] 
105-octane Gasoline +10% to engine power and turret traverse speed.
World of Tanks Strategy - Optional Modules and Consumables
Consumable