What type of fuel is required for the engine described?

The correct choice, which is 100 Low Lead, blue color, is the appropriate fuel for many piston-engine aircraft that are commonly used in general aviation. This fuel is specifically designed for aviation use and contains a lower level of lead compared to traditional 100 octane fuel, thereby reducing lead emissions and maintaining engine efficiency.

The blue color is a key identifier, helping pilots quickly distinguish it from other types of fuels. Using the correct fuel is vital for engine performance, as using a fuel with a higher lead content, such as 100 octane, could result in damage or decreased efficiency in engines designed for low lead.

The reference to AVGas, which generally refers to aviation gasoline, could be misleading as it is a broader category that includes both low-lead and regular fuels; however, it does not specify the correct low-lead type needed for many light aircraft. Lastly, Jet A is a different classification of fuel intended for turbine engines, and using it in piston engines could lead to catastrophic failure due to differing combustion properties. Thus, understanding fuel types, their specifications, and applications are crucial for ensuring safe aircraft operations.