
Number 1 fuel oil and diesel are not the same, but they are similar and can be used together or interchangeably in certain situations. Number 1 fuel oil is a heavier, more viscous, and less processed fuel oil with a higher amount of impurities. It is commonly used in outdoor stoves, portable heaters, and off-road vehicles like construction machinery. Diesel, on the other hand, is typically used in cars, trucks, and SUVs, especially in colder climates. It is also more expensive than Number 1 fuel oil. In some cases, diesel can be blended with Number 1 fuel oil for residential heating to reduce sludge formation during winter. While Number 1 fuel oil and diesel have distinct uses, they are both types of fuel oils derived from petroleum distillation and can be interchangeably referred to as distillate fuel oils, diesel fuel oils, or light fuel oils.
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What You'll Learn
- Number 1 fuel oil is heavier, more viscous, and has more impurities than Number 2 fuel oil
- Number 2 fuel oil is used for home heating and is untaxed, while diesel is taxed
- Number 1 fuel oil is better suited for colder weather as it resists gunking up or turning into sludge
- Number 1 fuel oil is commonly used in outdoor stoves and heaters, while diesel is used for cars and trucks
- Diesel is a type of fuel oil, and both are liquid petroleum products used for generating heat or power

Number 1 fuel oil is heavier, more viscous, and has more impurities than Number 2 fuel oil
Number 1 fuel oil is a heavier, more viscous, and less refined version of kerosene. It has a higher boiling point and produces fewer British Thermal Units (BTUs) than Number 2 fuel oil. Its common applications include outdoor stoves and portable heaters. However, due to its higher impurity content, it is not suitable for indoor use. Number 1 fuel oil is also used in blends with diesel fuel to create a "winter blend" that reduces sludge and gel formation during cold weather.
Number 2 fuel oil, on the other hand, is a commonly used heating oil for boilers and furnaces in homes. It is untaxed and has a red dye to differentiate it from taxed diesel fuel. Number 2 fuel oil is also combined with Number 1 fuel oil to create a "winter blend" that is less viscous and easier on furnaces and boilers.
The main difference between Number 1 and Number 2 fuel oils lies in their viscosity and intended use. Number 1 fuel oil is heavier and more viscous, making it suitable for outdoor use, while Number 2 fuel oil is lighter and less viscous, making it a preferred choice for indoor heating applications.
Number 1 fuel oil has a higher boiling point and a lower British Thermal Unit (BTU) rating compared to Number 2 fuel oil. This means that Number 1 fuel oil will take longer to boil and produce less heat energy during combustion. As a result, it is less efficient as a heating source compared to Number 2 fuel oil.
In summary, Number 1 fuel oil is heavier, more viscous, and has more impurities than Number 2 fuel oil. It is primarily used outdoors due to its higher impurity content and is also blended with diesel fuel to create a winter blend. Number 2 fuel oil, being lighter and less viscous, is widely used for indoor heating applications and is untaxed.
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Number 2 fuel oil is used for home heating and is untaxed, while diesel is taxed
Number 2 fuel oil and diesel fuel are very similar in terms of chemical composition. However, they are used for different purposes. Number 2 fuel oil is used for home heating, while diesel is used for vehicles. Because of these differences in application, Number 2 fuel oil is untaxed, while diesel fuel is taxed.
Number 2 fuel oil is commonly used in boilers and furnaces for heating homes, especially during winter. It is also referred to as "home heating oil" or "regular fuel oil". It is untaxed to keep prices low and accessible for homeowners who need to heat their homes during the colder months. It is dyed red to differentiate it from taxed diesel fuel and to indicate that it is tax-exempt.
On the other hand, diesel fuel is typically used for cars and trucks travelling on public roads. This type of fuel is taxed, and as a result, it is more expensive than Number 2 fuel oil. Taxed diesel fuel is undyed and has a natural light greenish colour.
Although Number 2 fuel oil and diesel are mostly used for different purposes, there is some overlap. In an emergency, diesel can be used as an alternative fuel source for home heating. However, it is not a common practice due to its higher cost. Additionally, Number 2 fuel oil should never be used in diesel cars as it is illegal due to tax regulations.
Number 2 fuel oil is also available in a winterized variety, known as "home heating oil winter blend". This blend combines Number 2 fuel oil with Number 1 fuel oil to make it less viscous and better suited for furnaces and boilers during the winter.
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Number 1 fuel oil is better suited for colder weather as it resists gunking up or turning into sludge
Number 1 fuel oil and diesel are not the same things, but they are related. Diesel is a type of fuel oil, and Number 1 fuel oil is a type of diesel. Fuel oil is a fraction obtained from petroleum distillation, and it is burned in furnaces, boilers, or engines to generate heat or power. Diesel is a specific type of fuel oil that also has a cetane number limit, which describes the ignition quality of the fuel.
Number 1 fuel oil is a type of diesel fuel that is designed for cold climates. It has a lower cloud point and a higher cetane rating, which makes it better suited for colder temperatures. The cloud point is the temperature at which wax crystallizes in the fuel and plugs the filter, stopping the engine. Number 1 fuel oil's higher cetane rating means it has a higher volatility and is more expensive. Its common applications include outdoor stoves, portable heaters, and off-road vehicles.
Number 1 fuel oil is less viscous than Number 2 fuel oil, which is another type of diesel fuel. This means that Number 1 fuel oil stays loose even in colder weather and resists gunking up or turning into sludge. This is why it is often used in blends with diesel fuel to create a "winter blend" that can withstand the negative effects of cold weather.
While Number 1 fuel oil can be used in some engines, it is not suitable for all. It should not be used in modern tractors or cars, as it could cause damage to the fuel system. Additionally, Number 1 fuel oil is not suitable for indoor use due to its higher number of impurities and lack of clean burn. The exhaust fumes emitted can be toxic when breathed in, so it is recommended only for outdoor use.
In summary, Number 1 fuel oil is a type of diesel fuel that is specifically designed for use in cold climates. Its lower viscosity and higher cetane rating make it better suited for colder weather as it resists gunking up or turning into sludge. However, it is important to follow the recommendations for its use to avoid any potential issues with engines or indoor air quality.
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Number 1 fuel oil is commonly used in outdoor stoves and heaters, while diesel is used for cars and trucks
Number 1 fuel oil and diesel are two different products, but they share some similarities. Number 1 fuel oil is a blend of diesel made for cold climates of 32 degrees and below. It is also similar to kerosene and is the fraction that boils off right after gasoline. It is commonly used in outdoor stoves and heaters, as it releases more impurities that can be harmful if inhaled for extended periods. Therefore, it is best suited for outdoor use.
Number 1 fuel oil is also used in off-road vehicles and construction equipment. It contains low sulfur, making it more environmentally friendly. This type of fuel oil is untaxed, which is reflected in its red colour.
On the other hand, diesel is used for cars and trucks. It is a type of fuel oil with a cetane number limit, which describes the ignition quality of the fuel. Diesel is typically taxed, and its clear, greenish colour distinguishes it from untaxed fuel oils.
While Number 1 fuel oil and diesel have distinct uses, they can be blended. Diesel can be combined with Number 1 fuel oil for residential heating, reducing sludge formation during winter. However, it is recommended to consult a technician before using this mixture.
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Diesel is a type of fuel oil, and both are liquid petroleum products used for generating heat or power
Diesel and fuel oil are indeed similar, and both are liquid petroleum products used for generating heat or power. However, there are some differences in terms of their chemical composition, intended use, taxation, and impact on the environment.
Firstly, diesel and fuel oil have similar chemical compositions, and both are derived from petroleum. Diesel is a type of fuel oil, and the main difference lies in their intended use. Number 1 fuel oil, for example, is used for outdoor stoves, portable heaters, and some generators, while diesel is primarily used for vehicles and engines. Number 1 fuel oil is heavier and has more impurities, making it unsuitable for indoor use due to toxic exhaust fumes.
Secondly, taxation also differentiates diesel and fuel oil. Untaxed diesel, often used for off-road vehicles and construction equipment, is dyed red to distinguish it from taxed diesel. Number 2 fuel oil, used for home heating, is also untaxed and red-dyed. This differentiation in taxation leads to price differences, with diesel being more expensive than Number 2 fuel oil.
Thirdly, diesel and fuel oil blends are sometimes used to address specific issues. During winter, diesel can be blended with Number 1 fuel oil to reduce sludge formation and improve performance in cold weather. This blend is known as "diesel fuel winter blend" and helps address the negative side effects of cold weather on regular diesel.
Finally, the environmental impact of diesel and fuel oil is also a point of consideration. Number 1 fuel oil, when burned, releases more impurities into the air, which can be harmful over time. On the other hand, untaxed diesel has a lower sulfur content, making it more eco-friendly.
In summary, while diesel is a type of fuel oil, and both share similarities as liquid petroleum products, their specific uses, chemical compositions, taxation, and environmental impacts set them apart. It is important to use each fuel for its intended purpose and consult professionals when considering blends to ensure safety and compliance with regulations.
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Frequently asked questions
Number 1 fuel oil is a type of distillate fuel oil, also known as diesel fuel oil, light fuel oil, gas oil, or distillate. It is a fraction obtained from petroleum distillation and is often used in outdoor stoves and portable heaters due to its heavier nature and higher viscosity.
Diesel is a type of fuel oil that is commonly used in cars, trucks, and SUVs, particularly in Europe. It is a more refined version of Number 1 diesel and is designed for warmer climates.
Number 1 fuel oil and diesel are not the same but are related. Number 1 fuel oil is a heavier, more viscous version of diesel with more impurities. Diesel is a specific type of fuel oil that has been further refined and is designed for use in vehicles. While Number 1 fuel oil can be blended with diesel for residential heating, they are not interchangeable for vehicle use.











































