Mercedes Mullins
Diesel fuel is prone to gelling in cold temperatures, which can cause significant issues for vehicles. To prevent this, anti-gel additives can be added to diesel fuel to lower the temperature at which it gels, thereby preventing blockages and ensuring smooth engine operation. This is especially important in winter, when diesel issues are more prevalent and extreme. Anti-gel additives are a cost-effective solution, saving vehicle owners time and money by reducing the need for expensive repairs and tow trucks. While diesel fuel is typically treated for the average temperature of the area, it is still recommended to add anti-gel additives when temperatures drop below 30°F to 32°F to prevent gelling and maintain effective vehicle operations.
How often should I add anti-gel to diesel fuel?
| Characteristics | Values |
|---|---|
| When to add anti-gel | When temperatures drop below 30°F |
| How often to add anti-gel | N/A |
| Why add anti-gel | To prevent fuel system blockages and ensure smooth engine operation |
| Where to buy anti-gel | Walmart, Sam's Club, Pilot Travel Center, TA Centers, Travel Centers |
| Anti-gel brands | Power Service, Howes, K100, Star Tron, Berkebile, Hot Shot’s Secret, Diesel Winter Rescue |
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What You'll Learn
How to tell if diesel from the pump has anti-gel
It can be challenging to determine whether diesel from the pump contains anti-gel or not. One common suggestion is to monitor the price of diesel. If the price increases by a few cents before winter, it is likely that the station has switched to a winter blend of diesel. This is often the case in areas that frequently experience freezing temperatures, such as Southern Ontario, where diesel prices increase during winter and decrease again in spring.
Another suggestion is to test the diesel fuel yourself. You can do this by filling a mason jar with diesel from the pump and leaving it outside overnight. Additionally, fill another mason jar with diesel and place it in the freezer with a thermometer. Observe both jars for any signs of cloudiness, which indicates that the waxy paraffins are separating from the fuel. Diesel fuel will typically cloud before it freezes, and this cloudiness can indicate the presence of anti-gel additives.
Some sources suggest that diesel purchased in northern states is generally treated for colder temperatures, so you may not need to add anti-gel unless temperatures drop significantly. However, it is always a good idea to ask the manager at the pump to confirm whether the diesel has been treated with anti-gel or if it is a winter blend.
It is worth noting that some truckers choose to add anti-gel as a precautionary measure, even if the diesel may already contain additives. This is because the amount of treatment in fuel from different pumps can vary, and it is often unclear how much treatment has been added.
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How often to add anti-gel to diesel
Diesel fuel is prone to gelling or thickening in cold temperatures, which can cause blockages in the fuel system and lead to engine breakdown. To prevent this, diesel fuel anti-gel additives can be added to the tank, which lowers the temperature at which diesel gels and helps dissolve the gel, restoring the fuel to a liquid state.
The need to add anti-gel to diesel arises in cold temperatures, typically below 30°F to 32°F (-30°C to 0°C). In regions with extremely cold winters, it is recommended to use anti-gel as a preventive measure. The frequency of adding anti-gel depends on the outside temperature and the diesel fuel's cloud point. The cloud point is the temperature at which the diesel starts to cloud or wax, indicating the potential for gelling. Anti-gel should be added when the temperature approaches or drops below the cloud point of the diesel fuel.
Some sources recommend treating diesel fuel year-round, not just during winter, to maintain effective operations and prevent engine issues. However, the frequency of adding anti-gel may vary depending on the specific product and the manufacturer's instructions. It is important to follow the directions on the anti-gel bottle or consult a professional for advice on how often to add it to your diesel fuel.
Additionally, it is worth noting that diesel fuel sold in colder regions may already have some level of treatment to prevent gelling. Certain gas stations or fuel stops provide maps or indications of which of their locations offer treated fuel, the degree of treatment, and the time of year it is provided. It is important to be aware of the potential treatment of diesel fuel in colder regions to avoid over-treating or unnecessarily adding anti-gel.
To summarise, the frequency of adding anti-gel to diesel depends on the outside temperature, the diesel fuel's cloud point, and the availability of treated diesel fuel in your region. It is important to follow the instructions on the anti-gel product and be mindful of the fuel's cloud point to ensure effective prevention of diesel gelling.
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The best anti-gel products
Anti-gel products are used to prevent diesel fuel from turning into a gel-like substance in cold temperatures. This process, known as gelling, occurs when wax crystals form in the fuel, which can clog the fuel filter and prevent the engine from starting. To avoid this, anti-gel additives can be used to maintain the fuel's liquid form. Here are some of the best anti-gel products available:
Howes Diesel Treatment
Howes Diesel Treatment is a popular choice among truckers and diesel engine owners. It is an affordable option that can be found at stores like Walmart and Farm & Fleet. Howes products are safe to use as they are petroleum-based and do not contain alcohol or harmful solvents. The company also offers a free tow guarantee, ensuring reliability and peace of mind.
Optilube XPD
Optilube XPD is a well-regarded anti-gel product that offers both anti-gel properties and added lubrication. It has been tested and ranked highly for the amount of lubricity it provides. Optilube also offers a summer formula, making it a versatile choice for different seasons. However, it may require ordering, which can be less convenient for some users.
Hot Shots Anti-Gel 7 in 1 Fuel Additive
Hot Shots Anti-Gel is a cost-effective option that has been shown to outperform other brands in tests. It is easy to use and provides peace of mind, especially in extremely cold temperatures. However, some users have expressed dislike for their squeeze bottles, mentioning that they cannot be refilled.
AMSOIL Diesel Cold Flow
AMSOIL Diesel Cold Flow is an effective anti-gel product that can lower the cold filter-plugging point (CFPP) by up to 40°F (22°C) in ultra-low-sulfur diesel (ULSD). This product is particularly useful for those with loaders and plow trucks, as it helps mitigate fuel problems in cold environments.
Power Service Diesel Fuel Supplement
Power Service Diesel Fuel Supplement is a reliable anti-gel product that has been used by drivers even in extremely cold temperatures, such as a cold December night in Montana at -41°F. It helps prevent gelling and ensures that the engine remains functional.
It is important to note that the frequency of using anti-gel products depends on various factors, including the climate and the quality of the fuel. Some fuels may already have anti-gel additives, so it is essential to check before adding additional treatments. Additionally, it is always recommended to follow the directions on the product labels for safe and effective use.
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How to ungel diesel fuel
Diesel fuel gelling occurs when the temperature drops and the paraffin wax in the fuel starts to crystallize and thicken, making the fuel gel-like. This can clog the entire fuel system since the fuel solidifies and loses its ability to flow. Gelling typically happens when the fuel is exposed to temperatures between 10 and 15 degrees Fahrenheit for 48 to 72 hours. The gelling process starts when the fuel hits the cloud point, which gives it a cloudy appearance. As the temperature continues to drop, the fuel will reach the pour point, which is usually 6°F to 10°F lower than the cloud point.
To ungel diesel fuel, the easiest way is to get the vehicle into a normal temperature zone. You can push it into a heated garage or simply wait for the temperature to rise. The fuel will return to normal naturally. If you don’t have access to a heated space or the temperature is expected to remain low, then you’ll need to add a gel-melting formula to your tank. Depending on your tank size and design, the time it takes to work can vary.
If you have gelled fuel in your lines or filter, you’ll need to remove your fuel filters and fill them with a de-gel formula and diesel fuel. Reinstall the filters and start the engine. You can also try adding a mix of de-gel formula and regular diesel fuel to the tank without removing the filters. It’s important to note that if engine complications occur at temperatures above 10°F to 15°F, the issue is likely due to ice rather than gel.
To prevent diesel fuel gelling, you can use a diesel fuel additive designed to keep fuel from gelling. For best results, add the anti-gel formula every time you fill up as long as low temperatures are a concern. Many fuel stations also sell winterized diesel fuel during the colder months, but its ability to resist gelling varies. Another preventative measure is to change your fuel filter every winter, as fuel filters can hold onto contaminants that can cause fuel to gel.
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The importance of anti-gel in diesel fuel
Diesel fuel is susceptible to changes in temperature, especially in cold climates. When temperatures drop, diesel fuel can form wax crystals, turning from a liquid into a gel-like substance. This process is known as diesel gelling and can cause significant issues for engines, leading to premature wear of injectors, pumps, and upper cylinders.
The use of anti-gel additives is crucial to preventing diesel gelling. These additives, such as Diesel Treat, act as fuel conditioners, removing water and preventing the formation of gel in cold climates. By treating diesel fuel with anti-gel agents, the fuel's performance is enhanced, and the engine's lifespan is extended. This is particularly important for those who travel between warm and cold climates, as the fuel must adapt to varying temperatures.
Anti-gel additives not only protect the engine but also offer cost-effectiveness. Without proper treatment, diesel gelling can result in costly downtime and engine repairs. By investing in anti-gel additives, individuals can ensure their diesel-powered vehicles, equipment, or machinery remain operational and well-maintained. This is especially relevant for those relying on diesel for their trucking, agricultural, or boating activities.
The frequency of adding anti-gel to diesel fuel depends on the temperature and the specific product used. Anti-gel bottles typically provide instructions, recommending treatment at temperatures around 30 to 32 degrees Fahrenheit. However, in extremely cold climates, treatment may be required at lower temperatures, such as below zero or single digits. It is important to follow the directions on the product and take into account the local climate conditions.
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Frequently asked questions
Anti-gel should be added to diesel fuel when temperatures drop below 30°F. This is because diesel fuel will start to gel at extremely cold temperatures.
You can fill a mason jar with fuel and set it out overnight. If the fuel clouds, this indicates that the waxy paraffins are coming out of the fuel, and you should add anti-gel.
If your diesel fuel gels, you can use an emergency fuel additive to help dissolve the gel and return the fuel to a liquid state.
Popular anti-gel products include Power Service Diesel Fuel Supplement +Cetane, Hot Shot’s Secret EDT+ Winter Defense, and Hot Shot’s Secret Diesel Winter Anti-Gel.
