How can the risk of icing in fuel systems be mitigated when using propane?

The use of methanol as an anti-icing additive is particularly effective in mitigating the risk of icing in fuel systems when using propane. Methanol lowers the freezing point of water, which can help prevent the formation of ice in the fuel system, especially in conditions where temperatures are low or where condensation occurs. As propane is a hydrocarbon that can have varying behavior in different temperatures, introducing methanol can ensure that any water present in the fuel does not freeze and obstruct fuel flow or damage components within the fuel system.

Utilization of higher pressure tanks does not directly address the issue of ice formation. While higher pressures can influence the boiling point of propane, they do not prevent icing from occurring due to moisture. Reducing the overall temperature is counterproductive, as icing is more likely to happen in colder conditions. Likewise, insulating the fuel lines may help manage temperature to some extent, but it does not actively prevent water from freezing if present in the fuel system. Thus, adding methanol is the most effective method among the choices to combat icing risks in this context.