What is a common method used to prevent fuel icing?

Adding anti-icing additives to the fuel is a widely recognized method for preventing fuel icing. This is particularly important in aviation, where fuel systems are exposed to very low temperatures at higher altitudes. When temperatures drop, moisture in the fuel can freeze, leading to the formation of ice that can block fuel filters and lines, resulting in engine failure or reduced performance.

Anti-icing additives, such as fuel system icing inhibitors, are mixed into the fuel to lower the freezing point of water and prevent it from forming ice. These additives work effectively in preventing the ice formation even when fuel is exposed to very cold conditions, thereby ensuring the fuel system operates smoothly and reliably.

While the other options may play a role in fuel system management or engine performance, they do not directly address the issue of fuel icing in the same way that the addition of anti-icing agents does. For example, larger fuel tanks may increase fuel capacity but do not inherently solve icing problems, and controlling temperature may help with overall engine function but isn’t a targeted solution for preventing icing.