
Kerosene and diesel fuel are derived from petroleum and share some similarities, but they are not the same. Kerosene is a more refined fuel with fewer impurities than diesel, which is why it was historically burned indoors. Kerosene is also distilled into a pure fuel and burns cooler, making it ideal for use in cold temperatures. On the other hand, diesel fuel is denser and has a higher flash point than kerosene. Diesel is also more commonly used in vehicles, whereas kerosene is used in jet engines, furnaces, and heaters.
| Characteristics | Values |
|---|---|
| Typical use | Kerosene: Aviation fuel, heating fuel, lamp fuel, furnace fuel. Also used in some diesel engines. |
| Diesel: Vehicle fuel, heating fuel | |
| Volatility | Kerosene is less volatile than gasoline |
| Chemical makeup | Kerosene has a higher molecular weight and a lower octane rating than gasoline. |
| Energy efficiency | Kerosene is less energy-efficient than gasoline |
| Refinement | Kerosene is more refined than diesel |
| Odor | Diesel has a stronger odor than kerosene |
| Color | Kerosene is colorless, diesel is reddish |
| BTUs | Kerosene has higher BTUs than diesel |
| Paraffin content | Kerosene has less paraffin than diesel |
| Gelling | Kerosene gels more slowly than diesel |
| Price | Kerosene is typically more expensive than diesel |
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What You'll Learn

Kerosene is more refined, with fewer impurities than diesel
Kerosene and diesel fuel are derived from crude oil, which is made up of carbon and hydrogen atoms arranged in hydrocarbon chains. These chains are separated during the refining process based on their boiling points. Lighter fuels like gasoline are created first, followed by heavier products like diesel and heating fuels. Kerosene is a type of fuel commonly used in aviation and some diesel engines, particularly in freezing temperatures.
Kerosene, also known as #1 Diesel, is more refined than diesel fuel and has fewer impurities. This is why kerosene was historically burned indoors, as diesel fuel leaves a strong odour when burned inside. Kerosene has a lower flash point than diesel, which means it is less prone to ignite and is safer to handle. It also has a lower freezing point, making it ideal for cold climates. Kerosene is typically cheaper than diesel and can be used as a substitute, although it is less fuel-efficient and reduces engine power.
Kerosene is often used to winterize diesel fuel, as it burns at a lower temperature and prevents gelling in freezing temperatures. However, using kerosene in a diesel engine can cause issues unless it is an approved alternative fuel for that specific engine. Kerosene also lacks the lubrication that diesel fuel has, which can damage the injector pump.
While kerosene is more refined than diesel, it is important to note that it is considered a polluting fuel by the World Health Organization (WHO). Kerosene smoke contains particulate matter that can lead to adverse health effects, including an increased risk of cancer, asthma, and respiratory infections. Therefore, while kerosene may be more refined, it is not necessarily a healthier or safer alternative to diesel fuel.
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Kerosene burns at a lower temperature than diesel
Kerosene, also known as #1 Diesel, is a highly refined fuel with fewer impurities than diesel. This is why kerosene was historically burned indoors, as diesel would leave a strong odour. Kerosene has a higher molecular weight and a lower octane rating than gasoline, giving it a lower energy density. It is also less refined than gasoline, meaning it contains impurities and contaminants that can affect its performance and stability.
Kerosene is typically cheaper than diesel, but it is also a polluting fuel. The World Health Organization (WHO) does not recommend its use in households as the smoke contains particulate matter that can be harmful and lead to a higher risk of cancer, asthma, tuberculosis, respiratory infections, cataracts, and adverse pregnancy effects.
Kerosene is commonly used in aviation and some types of diesel engines, as well as in furnaces, lamps, and heaters. In some parts of the world, it is used as a diesel fuel in freezing temperatures. It is less commonly used as fuel for ground transportation, although it has been used in the past.
In summary, while kerosene burns at a lower temperature than diesel and may be a cheaper alternative, it is less fuel-efficient, can damage diesel engines, and is considered a polluting fuel by the WHO.
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Kerosene is less fuel-efficient than diesel
Kerosene is a highly refined fuel that is commonly used in aviation and some types of diesel engines. It is derived from petroleum and has a lower boiling point than diesel, which means it is extracted from crude oil first, followed by diesel. Kerosene has a higher molecular weight and a lower octane rating than gasoline, resulting in a lower energy density and lower fuel efficiency.
Kerosene burns at a lower temperature than diesel, which can be advantageous in freezing temperatures as it prevents gelling. However, this also makes it less fuel-efficient, as the wasted fuel may end up costing more. Kerosene has fewer BTUs (British Thermal Units) than diesel, producing 139,000 BTUs of energy per gallon, while diesel produces the same amount of energy with fewer gallons. This makes diesel a more efficient fuel source in terms of energy output per unit of fuel.
The lower energy efficiency of kerosene can also impact engine power. Running kerosene through a diesel engine may result in reduced engine performance. Additionally, kerosene lacks sufficient lubrication, which can damage the injector pump of a diesel engine unless a lubricant is added.
Kerosene is generally more expensive than diesel, especially during the winter when there is higher demand for heating fuels. The price difference can vary, but kerosene tends to be roughly 20 to 40 cents more expensive per gallon than diesel. This higher cost, coupled with the lower fuel efficiency, can make kerosene a more costly option overall.
While kerosene has some advantages in specific use cases, such as in freezing temperatures, it is important to consider its lower fuel efficiency and potential impact on engine performance when comparing it to diesel fuel. Diesel fuel provides higher energy output per unit and is more commonly used in vehicles due to its efficiency and performance characteristics.
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Kerosene is typically cheaper than diesel
Historically, kerosene was more affordable and readily available at gas stations, making it a popular choice for various applications. However, the availability of kerosene has decreased over time, with newer gas stations favouring other fuel types. This reduced availability has contributed to a rise in prices for kerosene, narrowing the price gap between kerosene and diesel.
The price difference between kerosene and diesel is influenced by various factors, including geographical location, demand, and the specific type of kerosene. For example, during the winter, the premium for kerosene over diesel can range from 20 cents to as high as $1.00. Additionally, kerosene's higher refinement level and lower sulphur content also contribute to its higher price.
While kerosene's lower price can be advantageous, it is important to consider the potential risks associated with using it in diesel engines. Kerosene is a harsher fuel that lacks sufficient lubrication, which can lead to damage to the injector pump and other engine components. Furthermore, kerosene's lower burning temperature results in reduced fuel efficiency and engine power. Therefore, despite the cost savings, users must carefully weigh the potential performance and maintenance implications before opting for kerosene over diesel.
In summary, kerosene's typically lower price compared to diesel presents economic benefits, especially in cold climates where its performance advantages are most pronounced. However, users must also carefully consider the potential drawbacks and risks to engine performance and longevity before making the switch from diesel to kerosene.
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Kerosene is considered a polluting fuel
Kerosene, also known as "#1 Diesel" or "Kero", has higher British Thermal Units (BTUs) than "#2 Diesel" or fuel oil. It has a lower density and flash point than #2 Diesel, and fewer impurities, which is why it was historically burned indoors. Kerosene is more refined and distilled than diesel, giving it a higher molecular weight and a lower octane rating. It also has a lower energy density, which makes it less efficient as a fuel.
Kerosene is derived from petroleum and is a hydrocarbon liquid used as a fuel for jet engines, furnaces, lamps, and heaters. It is commonly used in aviation and some types of diesel engines, particularly in freezing temperatures to prevent gelling. Kerosene is also sometimes used for ground transportation, though this is less common.
The price of kerosene is generally higher than that of gasoline or diesel, and it is sold by the gallon, which contributes to its expense. Kerosene is typically cheaper than diesel, however, and this price difference has encouraged some to consider using kerosene as an alternative fuel for their diesel engines.
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Frequently asked questions
Kerosene is used in compression-ignition engines, jet engines, furnaces, lamps, and heaters.
Diesel is most commonly used for vehicles. It is also used by trucks, generators, and off-road equipment.
Kerosene has a higher molecular weight and a lower octane rating than gasoline. It also has fewer impurities than diesel fuel.
Kerosene can be used in some diesel engines, but not all. It is important to check the owner's manual or with the manufacturer before using kerosene in a diesel engine, as it may void the warranty.
Kerosene tends to be more expensive than diesel fuel, especially during the winter. However, kerosene is sometimes used in small quantities to prevent diesel from gelling in cold temperatures.











































