When the temperature of diesel fuel drops, the paraffin that is normally contained in it begins to harden. The wax in liquid form will solidify at 32 degrees, clouding the fuel tank. It will ultimately start to gel at 10-15 degrees and block the tank and fuel filters.
Drain the water separators/replace fuel filter
If your diesel has gelled, drive it to a warm location (or indoors) to warm up. This allows the wax crystals to return to a liquid state. Jamie Osborne, master diesel mechanic at Fremont Motors Casper, suggests looking for waxy, gel-like particles in the fuel filter. Drain the water separators if necessary, and replace the fuel filter.
Be careful inspecting, wear gloves
When inspecting diesel components, wear gloves since germs can thrive in diesel. It’s also known as diesel bug or diesel algae.
On a related note, this can also cause truck starting issues. “Microbial development in gasoline is generally described as being similar to the appearance of chocolate mousse,” according to Fuel and Friction. It grows in any water present in the fuel/tank.
To avoid this, choose a fuel that is continually moving rather than sitting around collecting water.
How to ungel diesel in an emergency
To ungel a diesel, use a De-Gel product. Gelled diesel is re-liquefied using Power Service Diesel 9-1-1. It can also be used to de-ice frozen gasoline filters.
It does not prevent gelling and should only be used in an emergency, not on a daily basis.
A De-Gel product is not the same as an Anti-Gel product. An Anti-gel will not work if your fuel has already gelled.
When should I add anti-gel to diesel fuel?
During the winter, use your diesel fuel anti-gel every time you fill up. Before pumping the fuel, remember to add the anti-gel. This will ensure that the anti-gel is evenly distributed throughout the gasoline. This could indicate that your fuel is starting to gel.
Can you put too much anti-gel in diesel?
Is it possible to use too much anti-gel in diesel? You’ve probably added much too much high-quality diesel fuel additive. Overloading your engine can result in clogged filters, reduced engine performance, and potentially a whole new set of fuel and engine issues. If you’re losing your libido, don’t overdo it.
Can you run a diesel with gelled fuel?
With millions of diesel users dependent on the fuel as a source of energy, it’s critical to understand what happens to diesel fuel during severe winter weather.
In severely cold temperatures, diesel fuel is prone to “gelling,” which is the word for the crystallization of waxes in the fuel.
This gelling can obstruct fuel flow to the engine or block fuel lines/filters, rendering diesel engines non-operational.
This is presumably something that folks who are used to operating diesel equipment in really cold situations are prepared for.
Many consumers, however, are confused with the chemistry of diesel fuel and how to keep their diesel fuel from gelling throughout the winter.
Will diesel Ungel on its own?
A variety of things can be put to a gelled tank to aid in the recovery of the fuel to its original state. Opti-Lube Gel Melt and Diesel 911, for example, are made specifically for gelled fuel. Simply fill the tank with one of these and follow the dosing directions. There’s no need to heat or mix the tank. These can take a long time to install, depending on the size and shape of the tank. The treated fuel in the tank may not be able to reach gelled fuel that is not in the tank, such as in fuel lines and filters, which is a significant constraint.
Can gelled diesel damage injectors?
The gelling, on the other hand, might not be enough to damage an injector. In other words, it gelled, and you didn’t try to run it again until it ungelled. However, if the fuel leading to the injectors has gelled up and the FICM is driving them, the injectors will be starving for fuel. It’s the same as if you were in a low (or no) pressure situation.
At what temp does #2 diesel gel?
This is the problem that diesel users are referring to when they talk about gelling. The cloud point, named after the white haze or “cloud” that emerges as paraffin wax crystalizes, is the temperature at which gelling begins. The cloud point of No. 2 diesel fuel is 14 degrees Fahrenheit.
Is diesel anti gel necessary?
Diesel fuel has a lot of advantages. More vehicle power means better fuel economy, but one of the main disadvantages of diesel fuel is that it performs poorly in cold weather. Diesel crystallizes when temperatures drop, clogging fuel filters and lines. This not only prevents engines from starting, but it can also result in costly repairs if the engines are damaged.
You should apply an anti-gel fuel supplement to keep diesel gasoline from gelling (or crystallizing). Anti-gel additives are simple to apply; simply add the remedy to your gasoline tank. Anti-gel additives lower diesel fuel’s freezing point, making it less prone to freeze in cold weather. Anti-gel additives are used to reduce the plugging point of cold filters (CFPP). The CFPP is the lowest temperature at which a filter will still allow fuel to flow through it.
The presence of wax in diesel fuel necessitates the addition of an anti-gel additive. Normally, wax is a liquid that dissolves in the fuel. The wax is the problem because it causes fuel to gel, and gelled fuel (or crystals) can clog engine fuel filters. If the temperature drops below a certain point, the engine will totally gel up and cease to function. So why don’t we just remove the wax and avoid the whole gelling issue? The wax component is there because it contributes to the fuel’s high cetane value. Cetane provides more power and improved engine response. In the winter, wax concentration is lower, but it is still present in diesel blends for cetane.
1. When the temperature drops below 32 degrees Fahrenheit.
It’s a good idea to start using anti-gel as soon as the temperature drops below freezing. As a general rule, the lower the temperature, the more gasoline additive is required. We recommend that you follow the anti-instructions gel’s on the bottle.
2. Sudden temperature dips
If the weather forecast predicts a cold front, you should prepare by applying additional anti-gel ingredient. The importance of preparation cannot be overstated. Anti-gel additives will not harm your engine, so use extra when in doubt.
3. When it comes to adding fuel
Whenever you fill up at the pump in the winter, use an anti-gel additive. Most additives can be put either before or after the fuel is added. To guarantee a good mixing, we like to add the ingredients ahead of time.
4. When the fuel starts to solidify
As soon as feasible, add an anti-gel ingredient. If your fuel has already gelled or your fuel lines are clogged, an emergency additive that dethaws fuel and de-ices filters is recommended. These emergency procedures re-liquify the fuel, making it combustible once more.
We provide a few anti-gel additives at Fuel OxTM as a precautionary step. We recommend that you use our Gasoline OxTM Cold Charge to prevent fuel gelling. We recommend utilizing our emergency fuel treatment, Fuel OxTM Heat Bomb, to restore the flow of frozen fuel lines if the fuel has already gelled. A little goes a long way with this product, as it does with all of ours; one ounce treats up to 80 gallons of fuel. A complete list of our winter anti-gel additives can be seen below:
How cold does it have to be for diesel to gel up?
- Gelling: It’s unusual to have a situation where the fuel practically turns to jelly. Gelling happens when the paraffin wax in diesel solidifies due to a drop in temperature, and the fuel’s temperature must be kept below minus 10 degrees F for extended periods of time, such as 48 to 72 hours. When diesel is cold soaked, the paraffin wax in the fuel hardens, giving it a hazy look. At temperatures as high as 32 degrees F, the fuel will begin to cloud, but it will continue to flow. Before the fuel can gel, it must be kept at a very low temperature for an extended period of time. It’s common to hear drivers complain about their fuel gelling up, but this is almost certainly not the issue they’re having. Ice or solidified paraffin wax in the fuel filter is more likely to be the issue. There’s more on that later.
- Cloud Point: To determine the cloud point of a sample of diesel fuel, which is the temperature at which the naturally present paraffin wax in #2 diesel fuel begins to crystalize, there are prescribed methods. The fuel has a hazy look due to the microscopic particles of suspended hardened wax. Cloud point temperatures for diesel fuel typically vary from -18°F to +20°F, but can reach +40°F depending on a variety of factors connected to the base stock and refining operations. The cloud point of so-called winter diesel fuel (#1 diesel or kerosene) is substantially lower since it contains relatively little paraffin. Fuel distributors will test the product and, if requested, may include the results in tenders and delivery receipts.
- The temperature at which a liquid loses its flow properties is known as the pour point. The pour point of diesel fuel changes according on the wax content in the fuel, which varies depending on the source of the base stock, the refining process, and the type and quantity of additives added to the fuel during refining or distribution. The difference between the cloud point and the pour point is always there, with the latter often being 2° to 20°F lower than the former. To establish the pour point of a fuel sample, certain tests must be performed. Bulk providers, as previously stated, can supply this information.
- When diesel fuel is cooled, the cold filter plugging point is a measurement based on a standardized test that indicates the rate at which it will flow through a standardized filtration equipment in a given amount of time. The CFPP is the point at which the sample fails to pass through the filter in the time allotted.
Does Stabil work for diesel?
This diesel fuel additive keeps fuel fresh, allowing for quick and easy starts while also improving engine performance.
Diesel Formula helps eliminate water and inhibits the buildup of sludge and sediment. It also cleans and lubricates fuel injectors to increase efficiency.
It can be used in any diesel fuel, including Ultra Low Sulfur Diesel and Bio-Diesel mixes, and is completely safe. It can also be used in any diesel engine, including marine and agricultural machinery.