Diesel Tanks and Maintenance: Storage, DEF, and Lifespan Guide

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Learn about diesel fuel tanks, their storage capabilities, and what happens if DEF is added. Discover tips on diesel tank maintenance, storage, and how long diesel lasts in a tank.

Diesel tanks and their maintenance: everything you need to know

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What is a diesel tank?

A diesel fuel tank is an essential requirement in many industries. These are robust diesel storage containers designed for safe storage and dispensing of diesel fuel for use in machines and vehicles.

Diesel fuel tanks overview

Hand holding gasoline nozzle for car refueling at gas station

Diesel tanks have an important role to play in powering vehicles, heavy machinery, and generators. Everyone, including fleet operators, farmers, and industrial businesses, is always looking for ways to save time and improve efficiency. With diesel tank based fuel storage, such operations can ensure their equipment can stay and operate longer at the job site.

Types of diesel tanks

Diesel tanks are available in different types, shapes, and sizes to address different requirements. The common options available on the market include:

Above-ground tanks
Underground tanks
Self-bunded tanks

Every diesel storage tank has its own set of features and benefits.

Underground diesel tanks

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When you have large diesel storage needs, especially in industrial settings, you should consider using an industrial diesel fuel tank. As the name suggests, these tanks are installed below ground level. They are available in the following material options:

Steel
Concrete
Fiberglass

An above-ground diesel storage tank finds application in both industrial and commercial settings. Since it is placed on ground level, it is simpler to install compared to its underground counterpart. Common material options include steel and plastic. These tanks are also easier to maintain and repair due to their easy accessibility.

Self-bunded tanks

Aerial Drone Shot Of Construction Site With Excavators On Sunny Day: Diverse Team of Real Estate Developers Discussing Project. Civil Engineer, Architect, Inspector Talking And Using Tablet Computer.

These diesel storage tanks, besides their industrial and commercial applications, are also used in the mining industry. These are self-contained and double-walled and designed for easy transportation. Common application scenarios include:

Construction sites
Agriculture operations
Mine sites
Emergency fuel needs

How long does diesel last in a tank?

Tank filler neck for AdBlue and Diesel fuel close-up. Adblue diesel exhaust fluid fuel tank cap. Close up Adblue Diesel exhaust fluid DEF and fuel tank cap.

It is a commonly asked question, how long does diesel last in a tank? If left to itself, diesel tends to get contaminated and degrade. If you can provide it with the ideal conditions, you can store it in a diesel tank for a period ranging from 6 to 12 months. Ideal conditions refer to the following:

Following the NFPA 110 Standard
Maintaining a cool temperature in the vicinity of 70°F
Using stabilizers and biocides

Factors affecting diesel shelf life in tanks

Here is a list of factors that affect diesel fuel in a diesel tank for truck or diesel storage tank:

Temperature: If the temperatures fluctuate at a fast rate, the stored diesel can degrade faster. Exposure to extreme temperatures also affects it. For example, the lighter components in diesel can evaporate in extreme heat and paraffin wax can crystalize in extremely low temperatures.
Oxidation: Diesel can easily oxidize when exposed to air. Oxidation results in creating deposits within diesel, affecting its quality.
Use of additives: When additives are added to a diesel fuel tank, they can reduce the effects of oxidation and microbial growth. Adding stabilizers and biocides can make diesel last longer.

Contamination: Diesel often gets contaminated due to being stored improperly. Moisture, debris, rust, and particulate matter can easily contaminate it and affect its usability. Exposure to moisture can cause microbial growth.

How long will 5 gallons of diesel last in an oil tank?

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If you ask how long 5 gallons of diesel last in an oil tank, the answer is it can last from just a single day to a few days. The duration will depend on your home’s heating requirements and the weather. On an extremely cold day, the entire 5 gallons can get consumed.

DEF in diesel tank: what happens?

Oil car motor lubricant engine lube with bubble isolated on white background

If you regularly deal with diesel fuel, you should know what happens if you put DEF in diesel tank. If you ever face a scenario with DEF in diesel tank, you should know what to do.

Understanding DEF (Diesel Exhaust Fluid)

Diesel exhaust fluid (DEF) is used in trucks to reduce emissions without affecting the vehicle’s power. It works on the principle of selective catalytic reduction or SCR to achieve this. DEF works by breaking down nitrogen oxide into nitrogen and water.

Besides being beneficial for the environment DEF also offers the following benefits for your vehicle:

Improving fuel efficiency by promoting more efficient combustion
Increasing your trucks’ power output
Reducing maintenance needs by helping the engine run more efficiently. A more efficiently running engine experiences less wear and tear.

What happens if you put def in a diesel tank?

Empty fuel warning light in car dashboard. Fuel pump icon. gasoline gauge dash board in car with digital warning sign of run out of fuel turn on. Low level of fuel show on speedometer dashboard

If you end up with DEF in a diesel tank, the fuel will become contaminated. The consequences can include:

Fuel injector damage
Fuel system clogs
Engine failure in extreme cases

DEF fluid in diesel tank can cause the fuel to lose its lubricating properties and this can significantly increase the wear and tear on the engine parts.

Steps to take if DEF is added to a diesel tank

If you accidentally add 1 gallon of DEF in diesel tank or even less, you should immediately take the following actions:

Do not start the engine
Turn off the engine if it is already running
Determine the amount of DEF in diesel tank
If the engine is run after DEF is added, look for any symptoms of damage. Some of the signs of DEF’s effects can include power loss, warning lights turning on, and an increase in emissions.
Flush the system, including the diesel tank, lines, and injectors.

It is recommended to have an experienced mechanic handle all these steps if you accidentally put DEF in a diesel tank.

Diesel tanks for trucks

Filling the fuel tank of a truck at a gas station.

Features of diesel tanks for trucks

Diesel tanks for trucks are designed keeping their placement in mind. They are usually side-mounted with the help of straps, brackets, or a combination of both.

The tank’s shape is affected by the fuel capacity requirements and often aesthetic preferences. The common diesel storage tank designs include:

Rectangular
Cylindrical
D-style

Rectangular designs are usually preferred when there is a need to maximize fuel volume.

When it comes to the choice of materials, you can find a diesel tank option in:

Stainless steel
Steel
Aluminum

Benefits of diesel transfer tanks for commercial use

Semi truck refueling with tank for liquid natural gas (LNG).

The following benefits of using a diesel transfer tank can make it easier for you to understand how its use can add value to your operations:

Never get stranded without fuel

The longest stretches between gas stations can range from 100 miles to 200-plus miles. With a diesel transfer tank, you will never be caught in the middle without fuel. These tanks are available in both connected and standalone configurations.

Support remote operations

If your business operates from a remote location, using fuel transfer tanks can support your operations. You can effectively run your operations from where you are instead of having to purchase larger vehicles with larger tanks. Thus, using a diesel storage tank can help make your operations more cost-effective.

More predictable fuel costs

Accessing gas in remote locations usually tends to be more expensive. When you use a diesel transfer tank, you can fill tanks close to your business hub and at known costs. You can fill it out before setting off, which is beneficial for accurate budgeting.

Diesel storage tanks: best practices

Enviromentally safe fuel tanks with safety features such as fire extinguishers and back up pillars to prevent trucks from backing into the tanks.

When you invest in diesel storage tanks, it is recommended to take a few measures to ensure optimal usage.

Maintenance tips for diesel storage tanks

It is recommended to keep a diesel tank at a cool temperature and away from water. You should further use the following maintenance tips to extend its service life and usability:

Prevent sludge build-up: Use products with biocide properties to keep the diesel free of bacteria. Left to itself, a diesel storage tank can build up biomass and sludge over time.
Avoid water buildup: Water buildup can cause bacteria growth and affect fuel quality. Besides using biocides to kill bacteria, it is recommended to use ethanol to disperse water.
Check fill points: If the diesel storage tank has a flexible line for extracting fuel, make sure to set up a drip tray. It should be stored within a safe, lockable cabinet. If the tank has permanently fixed vent pipes or taps, set them up inside a bund. If any oil escapes, it should land within the bund.

Ensuring long-term storage of diesel fuel

Young truck driver in casual clothes is refueling the vehicle.

If you are going to store diesel fuel for a long time, you should use the following tips to increase its shelf life:

Always use a clean diesel fuel tank. If it was previously used for storing oil, make sure to use a solvent to remove any residue after draining the oil.
Filter old diesel. You can make old diesel last longer by filtering it before usage. This can help clean out any impurities.
Treat the fuel to maintain its quality. Fuel treatment can stabilize diesel by preventing oxidation.
Create an air-tight storage. Ensuring air-tight storage prevents additional factors from affecting the diesel’s quality. If the tank is not air-tight, water can enter, bacterial growth can take place, or the stored fuel’s temperature can be affected.

Regularly monitor the tank’s condition. Once you start using a diesel storage tank, make sure to monitor it regularly and clean it out after use.

Conclusion

Thus, there are many ways that you can benefit from the use of a diesel storage tank. The right storage tanks can help streamline your truck, fleet, or industrial operations by bringing greater reliability. When choosing the right tank, you should consider your needs and storage capacity requirements. It is also important to assess the tank manufacturer’s reputation.

Frequently Asked Questions

How long can diesel sit in a tank before it goes bad?
Diesel can sit in a tank for 6 to 12 months. The duration depends on the measures taken to preserve the fuel.

Is it better to keep the diesel tank full or empty?
It is recommended to keep a diesel fuel tank as full as possible. If it is kept empty, when not in use, it should be properly cleaned and any debris should be removed.

How often should you clean a diesel tank?
It is recommended to clean a diesel storage tank once every year.

How do you maintain a fuel tank?
You should use the right biocides to prevent bacterial growth, avoid exposure to water, and check the fill points regularly to maintain a fuel tank.

How do you clean a diesel tank that has been sitting?
It is recommended to clean a diesel tank with hot water and specialized detergent made to clean petroleum products.