What is the color of 100LL fuel?

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Multiple Choice

What is the color of 100LL fuel?

Explanation:
Color coding fuels helps prevent misfueling by giving a quick visual cue. 100LL, the common low-lead aviation gasoline used in piston-engine aircraft, is dyed blue. The blue tint serves as a clear identifier so fuelers and pilots can confirm they’re using the correct grade at a glance. The LL designation refers to the lead content, not the color, but the blue dye is the standard visual marker for this grade. Other fuels use different colors, so the blue color is a distinctive sign of 100LL.

Color coding fuels helps prevent misfueling by giving a quick visual cue. 100LL, the common low-lead aviation gasoline used in piston-engine aircraft, is dyed blue. The blue tint serves as a clear identifier so fuelers and pilots can confirm they’re using the correct grade at a glance. The LL designation refers to the lead content, not the color, but the blue dye is the standard visual marker for this grade. Other fuels use different colors, so the blue color is a distinctive sign of 100LL.

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