Regan Brown
Diesel fuel additives are added to diesel fuel to improve engine performance and longevity. Unlike gasoline, diesel fuel is heavier and more prone to change over time, even when stored. Diesel fuel additives can improve lubricity, increase fuel efficiency, and prevent the buildup of residues, which can clog important engine components. In cold weather, diesel fuel can transform into a gel, restricting fuel flow and potentially causing severe damage; anti-gel additives can prevent this. Other types of additives include anti-foam additives, which reduce foaming during refueling, and stabilizers, which prevent fuel from degrading over time.
Characteristics and Values of Diesel Additives
| Characteristics | Values |
|---|---|
| Anti-gel | Lowers the gelling point, improves cold-weather performance, prevents fuel from turning waxy and restricts fuel flow |
| Anti-foam | Reduces surface tension in air bubble walls, eliminates foaming, cleans the fuel management system and improves fuel economy |
| Lubrication | Increases lubrication, prevents corrosion, reduces ignition delay, increases fuel efficiency, reduces soot and particulate matter, reduces friction and improves combustion |
| Cetane rating | Raises the cetane number, improves ignition speed, acts as a lubricant, protects fuel system components |
| Fuel economy | Improves fuel economy, increases engine power output, keeps diesel engine emissions at satisfactory levels, gives better mileage, extends the life of the engine and fuel system components, improves the power of the engine |
| Anti-bacterial | Stops bacteria from forming gelatinous masses, prevents clogging |
| Water removal | Releases moisture from the tank, removes excess water |
| Fuel stability | Improves fuel stability, prevents fuel degradation |
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What You'll Learn
Anti-gel additives
Diesel fuel contains paraffin, which starts to crystallize when the temperature drops to 32°F. As the temperature continues to drop, the paraffin will eventually turn to gel, clogging the fuel tank and filters. This is known as diesel gelling, and it can cause severe damage by restricting fuel flow.
Some popular anti-gel additives include Hot Shot's Secret Diesel Winter Anti-Gel, which is safe for use in all diesel engines, and Howes Diesel Treat, which is North America's number one trusted anti-gel and fuel conditioner. These products are effective in preventing gelling in even the coldest temperatures and can be used with every fill-up during the winter months to ensure consistent protection.
In addition to their anti-gelling properties, these additives offer other benefits such as improved fuel economy, increased lubricity, and better cold-start performance. They can also act as detergents, helping to prevent fuel injector deposits and keep emissions at satisfactory levels.
Overall, anti-gel additives are an essential consideration for diesel engines, especially in cold climates, as they can help prevent fuel system issues and improve overall engine performance.
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Anti-foam additives
Diesel fuel has a natural tendency to entrain air and form temporary foam when dispensed from a filling station. Foaming is a particular problem for diesel vehicles, which employ tanks of irregular shapes and narrow filler pipes. This excess foam can cause premature fuel cut-off, resulting in a half-filled tank.
The use of anti-foam additives is essential for maintaining optimal lubrication performance. Foam in the oil can disrupt the oil's natural properties, leading to a loss of its ability to form a smooth, cohesive film. This can result in accelerated wear and overheating.
When selecting an anti-foam additive, it is important to consider factors such as the oil's operating temperature range and compatibility with the specific oil base. For example, some anti-foam additives contain high levels of silicon, which can be harmful to engines. Consulting with experts can help guide you towards the optimal choice for your machinery.
Overall, anti-foam additives are crucial for diesel engines to prevent foaming, maintain lubrication performance, and ensure the proper functioning of the fuel management system.
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Lubrication additives
Lubrication is a necessary component of diesel fuel as it prevents wear in the fuel delivery system, including pumps, high-pressure pumps, and injectors. Traditional low-sulphur diesel fuel typically contained enough lubricating properties to meet the needs of these components. However, modern ultra-low-sulphur diesel (ULSD) fuel is considered "dry" and incapable of providing sufficient lubrication. As a result, oil companies producing ULSD fuel must use additives to replace the lost lubricity.
There are various off-the-shelf lubrication additives available that can be added to diesel fuel. These additives are designed to improve lubricity and protect the precision components in modern diesel engines. It is recommended to choose an additive that is approved by the engine or generator manufacturer, as this can help extend the life of the injection system and avoid issues such as filter clogging.
One example of a lubrication additive is TC-W3, which is mentioned in several forums as a superior fuel additive for diesel engines. Other options include Marvel Mystery Oil, Super Tech 2-stroke oil, and AMSOIL Diesel Injector Clean. Vegetable oils, such as canola or sunflower oil, have also been suggested as possible additives to increase lubrication in diesel systems.
It is important to note that not all additives are compatible with diesel fuel. For instance, Marvel Mystery Oil has been reported to have a negative impact on diesel engines. Additionally, some additives may contain acid-based dimers or monoacid-based lubricity enhancers, which can react with metal cations and form deposits that clog filters and affect the injection system. Therefore, it is crucial to determine the makeup of the additive before use and ensure that it is recommended for use with diesel fuel.
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Fuel stabilizers
Diesel fuel can deteriorate or gum up when left for too long in a storage tank or fuel tank. It can also become contaminated with microbes. Fuel stabilizers can help in such cases. Fuel stabilizers are critical in helping to maintain the quality and efficiency of diesel fuel, particularly fuel that sits for long periods of time. A fuel stabilizer additive works by neutralizing and inhibiting the chemical reactions that lead to fuel degradation. They prevent oxidation and, in turn, prevent the damage that follows. When diesel fuel sits in a storage tank or fuel tank for lengthy intervals, fuel degradation can become an issue, resulting in oxidation. This oxidation can lead to the formation of acids, sediments, gums, and varnishes. These developments often clog fuel filters and injectors, hindering the performance of your engine.
Other harmful influences include water and air. Exposure to air coupled with moisture in the fuel can lead to the growth of microbes. Fuel stabilizers can help prevent microbial growth by removing water from the fuel and preventing the environment in which microbes thrive. Untreated diesel fuel can start to degrade within a few months of sitting in storage. The addition of just 10% biodiesel in Ultra-Low Sulfur Diesel (ULSD) can cut the shelf life of the fuel by almost half. The storage conditions of the fuel also play a huge factor. Varying temperatures can affect the fuel and play a role in moisture formation.
Diesel fuel stabilizers are designed to preserve the quality and chemical properties of diesel fuel. The purpose of a fuel stabilizer is to prevent the degradation of fuel caused by exposure to air, moisture, temperature changes, and extended storage periods. Fuel stabilizers are typically made up of assorted chemical compounds that include antioxidants, corrosion inhibitors, and detergents. Quality diesel fuel stabilizers can lend to the protection of the entire fuel system, increased engine performance, and better fuel economy.
Diesel fuel stabilizers can be used with all diesel engines and all diesel fuels. They prevent sludge and sediment formation, clean and lubricate fuel injectors to improve performance, and help remove water. It is safe to use and recommended for use at every fill-up, with a treat rate of 1 ounce to 10 gallons. Diesel fuel stabilizers can keep diesel fuel fresh for up to 12 months.
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Cetane rating additives
Cetane number (CN) is a measure of diesel fuel's combustion speed and compression needed for ignition. It is an important factor in determining the quality of diesel fuel. The higher the cetane number, the better the quality of the fuel.
During the refining process, diesel fuel receives a cetane number, which is an indicator of the fuel's combustion speed and compression needed for ignition. The cetane number is similar to gasoline's octane rating, with higher numbers indicating better-quality fuel.
Diesel engines typically perform well with fuel that has a cetane rating of 48 to 50. Diesel with lower numbers has longer ignition delays, requiring more time for combustion to be completed. Raising the cetane number is one of the goals of using fuel additives.
Some examples of cetane rating additives include Diesel Extreme and Peak's Blue Agri-Clean. Diesel Extreme adds seven points to the diesel's cetane score, while Peak's Blue Agri-Clean boosts cetane by five points. These additives also help to clean and lubricate injectors and other critical fuel system components, as well as remove excess water and contaminants from the fuel.
It is important to note that while cetane rating additives can improve the performance of diesel fuel, using fuel that exceeds the engine's requirements may not provide significant benefits. It is recommended to pay attention to the engine manufacturer's recommendations and use fuel that meets the required cetane rating.
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Frequently asked questions
You can add a diesel fuel additive to improve engine performance. Diesel fuel additives can help improve fuel economy, increase engine power output, and keep diesel engine emissions at satisfactory levels.
Adding a lubricating additive to diesel fuel can help prevent premature engine wear and tear, increase lubrication, and prevent corrosion.
Diesel fuel tends to transform into a waxy, glue-like gel in extreme cold conditions, which can restrict fuel flow and cause severe damage. Anti-gel additives help prevent this by lowering the gelling point and improving cold-weather performance.
