Storage time: Diesel fuel can last for up to two years if stored in a proper container. However, diesel may start to degrade or lose its ideal properties faster if certain storage conditions are not met.
Factors affecting shelf life:
- Temperature: Extreme temperatures, both high and low, can accelerate the degradation of diesel fuel. Ideally, diesel should be stored at moderate temperatures between 40°F and 80°F.
- Light exposure: Exposure to sunlight or other sources of ultraviolet (UV) light can cause the breakdown of diesel fuel components. It's best to store diesel in opaque containers or keep it in a sheltered location.
- Air exposure: Contact with air can lead to oxidation and the formation of undesirable compounds. Minimize air exposure by keeping the fuel container tightly sealed.
- Water contamination: Water is the enemy of diesel fuel. Even small amounts of moisture can cause microbial growth, clogging of filters and injectors, and corrosion. Always prevent the entry of water into the diesel fuel.
- Container material: The container material can also impact diesel fuel's stability. Diesel is usually stored in metal or plastic containers. Some plastics may degrade over time and contaminate the fuel. Always choose appropriate, compatible containers.
Precautions to prolong diesel fuel life:
- Use additives: Stabilizing additives can be added to diesel fuel to minimize degradation. These additives typically contain antioxidants and biocides to protect against oxidation and microbial growth.
- Keep the tank full: If you're storing a diesel vehicle for an extended period, it's a good idea to keep the fuel tank as full as possible to minimize air contact.
It's important to regularly check the appearance and smell of diesel fuel. If you notice any significant changes, or if the fuel appears hazy, cloudy, or has an off odor, it may be time to replace it.
