ADDING AN EXTRA FUEL TANK ALLOWS TO INCREASE THE RANGE OF YOUR HELICOPTERS AND PROPELLER PLANES, AT A PRICE. NOT ONLY THE EFFICIENCY WILL SUFFER, BUT THE CRAFT WILL HAVE A -25 SPEED AND -5% DODGE PENALTY. BE CAREFUL, IF YOU DUMP THE TANK, THE FUEL TENDS TO MYSTERIOUSLY DISAPPEAR WITHIN THE ENGINEERING DEPARTMENT.
CLASS: GTX (BUT ONLY VEHICLES WHICH USE FUEL).