What is the impact of extreme temperature on fuel quality?

Extreme temperatures can lead to a decrease in fuel quality, with one significant effect being the promotion of water formation. When fuel is subjected to high or low temperatures, condensation can occur, resulting in water accumulation within the fuel system. This water can originate from temperature fluctuations that cause moisture in the air to condense in the fuel tanks.

The presence of water in fuel is detrimental because it can lead to corrosion, microbial growth, and poor combustion efficiency. Therefore, the correct answer highlights the negative impact extreme temperatures can have on fuel quality by facilitating conditions that allow water to form within the fuel, ultimately compromising its integrity and performance.