How can one determine the quality of aviation fuel visually?

Determining the quality of aviation fuel visually can be effectively accomplished by inspecting for clarity, color, and the presence of particulates. This approach is essential because visual indicators often reveal crucial information about the fuel's condition.

Clarity is important as clear fuel without cloudiness or haziness indicates good quality and cleanliness. Any discoloration or unusual colors can signal contamination or degradation of the fuel. The presence of particulates, such as dirt or water, can also compromise the fuel's performance and safety, as contaminants can lead to fuel system blockages or engine damage.

While measuring density, checking the weight, and examining the container labels are important practices for assessing fuel, they do not provide immediate visual clues about the fuel's quality in terms of cleanliness and suitability for use. Thus, a visual inspection for clarity, color, and particulates is the most direct method to gauge the condition of aviation fuel.