As a chemical engineer with a focus on energy resources, I am well-versed in the nuances of fuel storage and longevity. Kerosene, a petroleum-based fuel, is commonly used for heating and lighting, and its shelf life is a critical consideration for both safety and efficiency.

The shelf life of kerosene can vary depending on several factors, including storage conditions, the quality of the kerosene, and the presence of additives.
Proper storage is paramount to ensure the longevity and safety of kerosene. It should be kept in a cool, dry, and well-ventilated area, away from sources of heat, sparks, and open flames. Exposure to heat can cause kerosene to evaporate or degrade, while moisture can lead to contamination and the growth of bacteria.

Quality and additives also play a significant role in determining the shelf life of kerosene. High-quality kerosene that is free from impurities will generally have a longer shelf life. Additives can be included to improve the stability and performance of the fuel, and they can also extend its shelf life. However, the presence of certain impurities or the absence of stabilizing additives can lead to a shorter shelf life.

It's important to note that kerosene can absorb water from the environment if not stored properly. This can lead to the growth of bacteria and mold, which can degrade the fuel and pose a health risk.
Storing kerosene in a sealed container can help prevent this issue.

The safe recommendation for storing kerosene, as you mentioned, is typically one to three months. However, this can vary based on the factors mentioned above. It is **not advisable to store kerosene from season to season**, especially if it is left inside a kerosene heater over the summer. Over time, the fuel will break down, which can lead to a decrease in performance and an increase in safety risks.

In summary, while the general guideline for kerosene storage is one to three months, it is crucial to consider the specific conditions and characteristics of the fuel in question. By ensuring proper storage and monitoring for signs of degradation, one can maximize the shelf life and safety of kerosene.

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One to three months is our safe recommendation for storing fuel. Do not store kerosene from season to season, especially left inside the kerosene heater over summer. Old fuel will break down and absorb water, encouraging growth of bacteria and mold.read more >>