
Diesel fuel conditioner is an additive designed to improve the performance of diesel engines. It is added to the fuel tank to supplement diesel with the necessary constituents to improve fuel efficiency, prolong engine life, and reduce harmful exhaust emissions. Diesel fuel conditioners also help to prevent fuel degradation, which can cause issues such as oxidation, gelling in cold weather, and microbial growth. These issues can lead to clogged fuel filters and injectors, reduced engine performance, and even complete engine failure. Diesel fuel conditioners are particularly beneficial for vehicles that are driven daily, especially over long distances, as they help protect the engine, which is one of the most vital and expensive components of a vehicle.
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What You'll Learn

Improving engine performance and longevity
Diesel fuel conditioners are designed to improve engine performance and longevity. They are particularly useful for vehicles that are driven daily, especially over long distances. By safeguarding against poor-quality diesel, fuel conditioners can increase engine performance and prolong engine life.
One of the main benefits of using a diesel fuel conditioner is its ability to prevent fuel degradation. Untreated diesel fuel can start to degrade within a few months, due to exposure to air, moisture, temperature changes, and extended storage periods. Fuel stabilizers, a type of fuel conditioner, contain chemical compounds such as antioxidants, corrosion inhibitors, and detergents that work to prevent fuel degradation and maintain fuel quality. This, in turn, helps to improve engine performance and extend engine life by preventing issues such as filter and fuel line plugging, tank corrosion, and fuel injector fouling.
Another key advantage of diesel fuel conditioners is their ability to improve lubricity. Low-sulphur diesel, for example, can cause increased friction and engine wear. Fuel conditioners with improved lubricity can reduce friction, leading to a reduction in engine wear and an increase in fuel economy. Additionally, the added lubricity can help prevent the premature wear of injectors, pumps, and upper cylinders, further enhancing engine performance and longevity.
Diesel fuel conditioners also provide protection against cold temperatures. In cold climates, diesel fuel can gel, resulting in smoke, loss of power, hard starts, or even the inability to start the engine. Anti-gel fuel conditioners, such as Howes Diesel Treat, prevent gelling in extremely low temperatures, ensuring that engines can operate reliably during winter.
Furthermore, diesel fuel conditioners can help to clean injectors and fuel systems, removing deposits and built-up particulate matter. This not only improves engine performance but also reduces harmful exhaust emissions.
Overall, diesel fuel conditioners offer a range of benefits that can improve engine performance and longevity. By preventing fuel degradation, increasing lubricity, providing anti-gel protection, and cleaning fuel systems, diesel fuel conditioners can help to optimize engine functionality and extend engine life.
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Reducing harmful emissions
Diesel fuel conditioners are designed to improve the quality of diesel fuel and enhance the performance of diesel engines. They are particularly useful for safeguarding against poor fuel quality, which can vary due to government mandates and crude oil refining processes. Low-quality diesel can cause serious damage to the engine over time, leading to reduced performance and efficiency.
One of the key benefits of diesel fuel conditioners is their ability to reduce harmful exhaust emissions. This is achieved through several mechanisms:
- Firstly, fuel conditioners improve fuel efficiency, which in turn reduces the amount of fuel required to power the engine. This leads to a decrease in overall emissions.
- Secondly, diesel fuel often contains high levels of sulphur, which can increase engine wear and emissions. Fuel conditioners can reduce the sulphur content, leading to lower emissions and improved engine performance.
- Thirdly, fuel conditioners can act as anti-gelling agents, preventing the fuel from gelling in cold weather. This is important because gelled fuel can result in smoke and the loss of power, leading to increased emissions.
- Additionally, fuel conditioners can improve lubricity, reducing friction and engine wear. This can lead to a more efficient engine and lower emissions.
- Fuel conditioners can also help prevent the buildup of deposits and residues within important engine components, which can hinder performance and increase emissions.
- Finally, some fuel conditioners are made from renewable and environmentally friendly sources, further contributing to the reduction of harmful emissions.
Overall, the use of diesel fuel conditioners can play a significant role in reducing harmful exhaust emissions, improving engine performance, and prolonging engine life. They are a valuable tool for vehicle owners, especially those who drive daily or cover long distances, to maintain the health and efficiency of their diesel engines.
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Preventing fuel degradation
Untreated diesel fuel can start to degrade within a few months of sitting in storage. This degradation is caused by exposure to air, moisture, temperature changes, and extended storage periods. Fuel degradation can lead to gumming, varnish formation, and microbial growth, which can cause filter and fuel line plugging, tank corrosion, fuel injector fouling, and even complete engine failure.
To prevent fuel degradation, a diesel fuel stabilizer additive can be used. Fuel stabilizers are designed to preserve the quality and chemical properties of diesel fuel by preventing oxidation and inhibiting the chemical reactions that lead to degradation. They typically contain antioxidants, corrosion inhibitors, and detergents, which work together to maintain fuel quality.
By using a fuel stabilizer, you can maintain the quality of your diesel fuel for a year or more. This is especially important if your diesel fuel is exposed to varying temperatures, as this can impact the formation of moisture and affect the fuel's shelf life.
In addition to fuel stabilizers, diesel fuel conditioners can also help prevent fuel degradation. Diesel fuel conditioners are added to the fuel tank to improve fuel efficiency, prolong engine life, and protect against winter gelling. They can increase lubricity, clean injectors, and improve fuel economy. Some conditioners, like Howes Diesel Treat, also act as anti-gelling agents, preventing diesel fuel from gelling in cold temperatures and improving engine performance.
By using a combination of diesel fuel stabilizers and conditioners, vehicle owners can effectively prevent fuel degradation, maintain engine performance, and extend the life of their diesel engines.
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Increasing fuel efficiency
Diesel fuel conditioners are designed to improve fuel efficiency and engine performance. They are particularly useful for vehicles that use large amounts of fuel, such as trucks, tractors, and construction vehicles.
Fuel efficiency can be increased by up to 10% with the use of a conditioner. This is achieved through improved lubricity, which reduces friction caused by low-sulphur diesel. For example, Milligan Bio's Diesel Fuel Conditioner (DFC) is a canola-based additive that meets ultra-low sulphur regulations. DFC has a cetane number more than 10 points above diesel fuel, aiding the removal of particulates that build up in the engine.
Fuel conditioners also prevent the build-up of harmful deposits and residues, which can hinder engine performance and fuel efficiency. Howes Diesel Treat, for instance, is an anti-gel fuel conditioner that prevents gelling in cold temperatures, as well as providing lubricity and preventing deposits.
Additionally, diesel fuel conditioners can improve engine start-up and reduce smoke and rough idling. They can also protect against winter gelling and improve engine turn-over time. For vehicles in colder climates, a diesel fuel conditioner with an anti-gelling agent is essential to prevent fuel from gelling and maintain engine performance.
By using a diesel fuel conditioner, you can improve fuel efficiency, enhance engine performance, and extend the life of your diesel engine.
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Anti-gelling properties
Diesel fuel can start to degrade within a few months of sitting in storage. This degradation can be caused by exposure to air, moisture, temperature changes, and extended storage periods. When diesel fuel sits in a storage tank for long periods, it can undergo oxidation, leading to the formation of acids, sediments, gums, and varnishes. These substances can clog fuel filters and injectors, hindering engine performance.
Diesel fuel conditioners are designed to address these issues and improve the performance and longevity of diesel engines. One of their key functions is their anti-gelling properties, which are especially important in cold climates. At temperatures of 15°F or lower, untreated diesel fuel may gel, resulting in smoke, loss of power, hard starts, or even the inability to start the engine.
Diesel fuel conditioners, such as Howes Diesel Treat, act as anti-gelling agents, preventing the fuel from gelling even in the coldest temperatures. This ensures that the engine remains operational and reduces the risk of downtime and lost revenue due to engine issues. The anti-gelling properties of diesel fuel conditioners are achieved through the use of advanced performance-enhancing technology and safe, petroleum-based ingredients that do not include alcohol or harmful solvents.
In addition to preventing gelling, diesel fuel conditioners offer multiple benefits for engine maintenance. They can increase lubricity, improve fuel economy, clean injectors, and protect against microbial growth. By reducing friction and engine wear, diesel fuel conditioners contribute to improved engine performance and prolonged engine life.
For diesel vehicles and equipment operating in cold climates, the use of a diesel fuel conditioner with anti-gelling properties is essential. It ensures the smooth operation of the engine and helps maintain the overall efficiency and longevity of the diesel fuel and engine system.
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Frequently asked questions
The purpose of a diesel fuel conditioner is to improve the quality of diesel fuel and safeguard against poor fuel quality.
Diesel fuel conditioners are designed to supplement diesel with necessary constituents that improve engine performance and efficiency. They can also prevent harmful build-up within important engine components.
Diesel fuel conditioners can increase engine life, improve gas mileage, reduce harmful exhaust emissions, increase engine performance, and protect against winter gelling.
Diesel fuel conditioner can be used all year round. However, it is particularly beneficial during winter to prevent diesel fuel from gelling in cold weather.
You only need to add diesel fuel conditioner once to fresh fuel to allow for proper mixing.











































