
Knowing when to refill storage fuel tanks is an important consideration for many industries and applications, such as farming, classic car storage, and emergency backup generators. The timing of refills depends on various factors, including tank size, fuel type, usage patterns, and maintenance practices. For example, diesel fuel can be stored for extended periods, while gasoline is less stable and more susceptible to tainting. Regular maintenance and the use of fuel stabilizers can extend the time between refills, ensuring clean and usable fuel. In terms of refilling practices, some individuals opt for bulk fuel dealers or local fuel delivery companies, which often have minimum delivery requirements. Proper placement, maintenance, and cleaning of storage tanks are also crucial to ensure safety and functionality.
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What You'll Learn

Fuel type considerations
When it comes to refilling storage fuel tanks, there are several factors to consider, and the type of fuel plays a crucial role in determining the optimal refill strategies. Here are some considerations regarding fuel types:
Diesel
Diesel fuel storage and refilling require careful consideration. Diesel is generally stable and can be stored for extended periods without significant deterioration. However, for storage periods exceeding a year, it is advisable to treat the fuel to maintain its quality. One challenge with diesel is the potential for fungus growth under certain conditions, which can impact the fuel's stability. Additionally, non-road diesel, which is exempt from road tax, may be a more cost-effective option for certain applications.
Gasoline
Gasoline, also known as petrol, requires more careful management than diesel. It is less stable and has a shorter shelf life, making it more susceptible to tainting if not used promptly. Therefore, it may not be suitable for storage in large quantities unless there is consistent and frequent usage.
Heating Oil
Heating oil is commonly used for fuel storage tanks, particularly in colder regions. Used heating oil tanks are often inexpensive and can be a cost-effective option for those seeking to store fuel on their property. Local fuel oil suppliers can provide guidance on the availability and delivery of heating oil for storage tanks.
Propane
Propane is another fuel option for storage tanks, particularly for those seeking to power backup generators or meet emergency fuel needs. Propane tanks are available in various sizes, such as 120 or 250 gallons, and can be refilled by fuel trucks on a regular basis.
Vehicle Storage Considerations
When storing classic vehicles over the winter or for extended periods, the decision to fill the fuel tank depends on the vehicle's age and the type of fuel tank. For modern classics with plastic fuel tanks, it is generally safe to leave the tank empty during storage. However, for older vehicles with metal fuel tanks, there are advantages and disadvantages to filling the tank. Filling the tank reduces corrosion, but the fuel may become stale over time, especially with modern fuels that have shorter shelf lives.
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Bulk fuel dealers
When it comes to refilling storage fuel tanks, there are several factors that bulk fuel dealers and their clients should consider. Firstly, the type of fuel being stored is important. For example, diesel fuel is relatively stable and can be stored for extended periods, whereas gasoline is less stable and more susceptible to tainting. As such, diesel is a more common choice for bulk storage and emergency fuel supplies.
The frequency of refills will depend on fuel usage and tank capacity. For instance, a farm with 3,900-gallon fuel tanks may require refills once a month during the off-season and weekly during the harvest season. Bulk fuel dealers should be able to accommodate these varying needs, offering flexible delivery schedules and minimum-gallon deliveries, which may increase with distance from the dealer's location.
In addition to refills, bulk fuel dealers provide valuable services such as fuel tank maintenance and safety training. Proper maintenance is crucial for both functionality and safety, especially for aboveground storage tanks (ASTs), which are a popular choice due to their ease of maintenance, relocation, and lower environmental impact compared to underground storage tanks.
Overall, bulk fuel dealers play a vital role in ensuring their clients have access to clean, usable fuel, helping to prevent unexpected downtime and costly repairs. By offering convenient refilling services, maintenance support, and guidance on regulatory compliance, these dealers enable their clients to focus on their core operations while benefiting from the control and cost savings that come with onsite fuel storage.
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Refill frequency
The refill frequency of a storage fuel tank depends on several factors, including the type of fuel, the size of the tank, the usage rate, and the specific needs of the user.
For example, those storing diesel fuel for farm equipment or generators may opt for bulk fuel storage tanks, which can range from 350 to 3,900 gallons in capacity. In this case, refilling may occur once a month during the off-season and weekly during the harvest or busy season. Diesel fuel can be stored for extended periods without significant issues, although it should be treated if stored for more than a year to prevent issues.
On the other hand, gasoline is less stable and more prone to tainting, so it may not be suitable for long-term storage. For gasoline users, refill frequency may be dictated by the vehicle's usage and the owner's preference. Some individuals opt to refill their vehicles when the tank reaches half or a quarter full, while others wait until the low fuel light comes on.
Additionally, the material of the fuel tank should be considered. For classic vehicles with metal fuel tanks, there are positives and negatives to keeping the tank full during storage. A full tank reduces corrosion but may result in stale fuel after a few months. Modern vehicles with plastic fuel tanks can typically be stored without being filled.
Regardless of the fuel type or tank size, regular maintenance of storage fuel tanks is crucial for both functionality and safety. This includes proper placement, cleaning, and servicing to ensure clean, usable fuel and prevent unexpected issues.
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Maintenance and safety
Regular Maintenance and Inspections
Regular maintenance is paramount for both the function and safety of your fuel storage tank. It is recommended to perform routine inspections and maintenance tasks to keep the tank in good condition. This includes checking for corrosion, leaks, and any signs of damage. Aboveground storage tanks (ASTs) are more susceptible to environmental damage and potential spills than underground tanks and hence may require more frequent inspections.
Cleaning
Regular cleaning is vital for maintaining fuel quality and minimizing safety hazards. Sludge and residue buildup can increase the risk of fires or explosions. Proper cleaning involves draining the tank, removing sludge, scrubbing with industrial cleaners, thorough rinsing, and drying. Additionally, treating the tank for bacteria is essential to prevent microbial growth, which can lead to corrosion, clogged filters, and reduced fuel performance.
Placement and Environment
The placement of your fuel storage tank should consider safety and environmental factors. For ASTs, it is advisable to place them out of the way to maintain the property's aesthetics while also promoting safety. Orienting the tanks in an east-west direction reduces exposure to solar radiation, which can cause fuel tank weathering over time. Underground tanks offer enhanced protection from elements such as rain and temperature variations but may be more challenging to inspect and maintain.
Safety Precautions
To ensure worker safety during maintenance and operations involving the fuel storage tank, several precautions should be taken:
- Well-lit entry and exit points to prevent accidents and improper equipment use
- Mandatory use of personal protective equipment (PPE), including earplugs, respirators, gloves, and eye protection
- Fire-guarding or vaulting to protect against fuel ignition in emergencies
- Development of a comprehensive workplace safety program that complies with OSHA regulations
- Implementation of a confined space entry permit system for workers entering the tank, as per OSHA guidelines
Fuel Monitoring and Treatment
Utilizing fuel monitoring systems can help detect issues such as water accumulation and microbial contamination. Proactive maintenance based on these detections can prevent fuel degradation and equipment damage. Treating stored fuel with stabilizers can also improve its longevity, especially if it is expected to be stored for several months.
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Storage tank placement
When it comes to storage tank placement, there are several key considerations to keep in mind. Firstly, safety and functionality are the top priorities. Above-ground storage tanks (ASTs) are a popular option for bulk fuel storage due to their convenience and versatility across various industries, including farming and emergency backup power generation. ASTs are generally easier to maintain and relocate than underground storage tanks, making them a more cost-effective and environmentally friendly choice.
To optimise AST placement, it is advisable to position them in a safe and secure area that is out of the way. While ASTs offer greater accessibility for maintenance and refilling, they are exposed to the elements, including extreme weather conditions. Therefore, it is essential to take measures to protect your AST from high winds, rainfall, ice, snow, hail, sunlight, and temperature fluctuations. Proper placement can help extend the lifespan of your AST and ensure the safety of your fuel supply.
When deciding on a location for your AST, consider the surrounding environment and any potential hazards. Keep the AST away from areas that may be prone to flooding or standing water, as this could pose a contamination risk. Additionally, ensure the AST is situated on level ground to maintain stability and reduce the risk of structural damage. It is also crucial to comply with any relevant regulations and guidelines regarding fuel storage and placement to avoid safety hazards and legal issues.
In terms of accessibility, it is beneficial to place your AST in an area that allows for easy refilling by fuel delivery trucks. Consider the frequency of refills and the amount of fuel you typically require when assessing the most convenient location. Additionally, think about the layout of your property or facility and any obstacles that may hinder the movement of fuel trucks or maintenance equipment. By optimising the placement of your AST, you can streamline the refilling process and minimise disruptions to your operations.
Lastly, consider the visual impact of the AST on your property. While functionality and safety are paramount, you may want to place your AST in an area that is less visible if you are concerned about aesthetics. Balancing the visibility and accessibility of your AST can help create a harmonious environment while still maintaining the operational benefits of bulk fuel storage. By carefully considering these factors, you can ensure the optimal placement of your storage tank, contributing to both short-term efficiency and long-term durability.
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Frequently asked questions
It depends on the usage and size of your tank. For example, a farm with 3,900-gallon fuel tanks may require refilling once a month during the off-season and weekly during the harvest season.
You can contact a bulk fuel dealer or a local fuel delivery company to refill your storage fuel tank.
Regular maintenance of your storage fuel tank is essential for both function and safety. Aboveground storage tanks (ASTs) are generally easier to maintain and relocate than underground storage tanks.
Storing fuel in a storage tank has several benefits, including refueling farm equipment, powering vehicles, and providing backup power during emergencies or natural disasters.
It is generally recommended to keep your storage fuel tank at least half full to avoid sediment buildup and potential pump issues. However, some prefer to keep their tanks between a quarter and half full to ensure they have enough fuel for emergencies.











































