What should be the temperature of stored diesel to prevent microbial growth?

To prevent microbial growth in stored diesel, maintaining the temperature below 70°F (21°C) is crucial. At temperatures above this threshold, microbial activity can significantly increase, leading to issues such as fuel degradation and the formation of sludge and sediments in the fuel tanks.

Microorganisms, including bacteria and fungi, thrive in warmer environments, especially when there is the presence of water. Keeping the diesel at a lower temperature helps to inhibit their growth, ensuring the fuel remains stable and usable over time. Thus, the recommended storage condition focuses on keeping fuel as cool as possible, ideally below 70°F, to prevent any unwanted biological activity that could compromise the integrity of the diesel.