Rajan Wilcox
Diesel fuel is a liquid fuel designed for use in diesel engines, which are internal combustion engines that use compression to ignite the fuel without a spark. Invented by Rudolf Diesel in the 1890s, diesel engines were originally designed to use coal dust as fuel but soon transitioned to using liquid fuels, including crude oil, petrol, kerosene, and vegetable oils. Today, diesel fuel is primarily derived from the distillation of crude oil, and it has become a major transportation fuel used in cars, trucks, trains, boats, and planes. The demand for and price of diesel fuel are influenced by various factors, including the cost of crude oil, economic trends, and seasonal variations in heating oil demand.
| Characteristics | Values |
|---|---|
| Definition | Diesel fuel, also called diesel oil, heavy oil or simply diesel, is a liquid fuel designed for use in a diesel engine. |
| Origin | German scientist and inventor Rudolf Diesel conducted experiments for his compression-ignition engine in 1892. |
| Composition | A complex mixture derived from crude oil through fractional distillation, consisting mainly of aliphatic and aromatic hydrocarbons with a boiling point range of 163–357 °C. |
| Types | Petroleum-derived diesel (petrodiesel), biodiesel, biomass-to-liquid (BTL) diesel, and gas-to-liquid (GTL) diesel. |
| Standards | EN 590 in the European Union, ultra-low-sulfur diesel (ULSD) in the UK, mainland Europe, and North America. |
| Usage | Diesel engines in trucks, trains, boats, and barges for transportation, military vehicles, construction and farming equipment, and electricity generation. |
| Demand Influencers | International demand for distillate fuel, seasonal variations, distance from the Gulf Coast, local market conditions, and competitor presence. |
| Price Influencers | Crude oil prices, supply issues, local costs, and taxes. |
| Maintenance | Allowing a diesel vehicle to run out of fuel can damage the fuel system due to sediment buildup and clogging. |
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What You'll Learn
Diesel fuel demand and supply
Diesel fuel is a major transportation fuel, and its demand often aligns with economic trends. A positive correlation exists between GDP growth, manufacturing, and the demand for diesel fuel. For instance, an increase in manufacturing and exports can lead to higher diesel demand, as observed in Texas and other parts of the United States. However, the pandemic caused a slowdown in these sectors, leading to a decrease in diesel demand and subsequent adjustments in production.
International demand for distillate fuel, which includes heating oil and diesel fuel, also impacts U.S. diesel fuel prices. The preference for diesel engine cars in many countries contributes to this demand. Additionally, distillate fuel is used for electricity generation in several nations, further increasing international demand.
Seasonal variations affect diesel fuel demand and prices. During fall and winter, the demand for heating oil, which is produced simultaneously with diesel fuel, increases. This can put pressure on the diesel fuel market and influence prices. Regional factors, such as agricultural demands, can also cause seasonal fluctuations in diesel fuel prices.
The cost of crude oil is a significant component of diesel fuel prices, accounting for about 50% of the monthly average U.S. retail on-highway diesel fuel prices between 2004 and 2023. Reduced oil production, such as the cuts implemented by OPEC, Saudi Arabia, and Russia, can impact overall oil production and affect diesel fuel availability and prices.
Other factors, such as the war in Ukraine, have also influenced the market. Sanctions on Russia, a major oil supplier, have redirected their oil exports primarily to China and India. Additionally, the reallocation of resources for the war effort may further affect the availability and prices of diesel fuel.
While the market can predict and adjust to some demand trends, unexpected events like accidents, natural disasters, or refinery issues can disrupt the supply chain and impact diesel fuel supply and prices.
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Diesel fuel price fluctuations
Diesel fuel prices are subject to fluctuations due to various factors, including international demand, seasonal variations, transportation costs, and local market conditions.
International demand for distillate fuel influences U.S. diesel fuel prices. The similarity between heating oil and diesel fuel means that changes in demand for one can impact the price of the other. The prevalence of diesel engine cars in other countries contributes to this dynamic. Additionally, distillate fuel is used for electricity generation in several countries, further affecting international demand.
Seasonal variations in heating oil demand during fall and winter can exert pressure on diesel fuel prices. In agricultural regions, fluctuations in farmers' demand for diesel fuel during different seasons can also influence pricing.
Transportation costs play a role in diesel fuel price fluctuations, with areas farther from the Gulf Coast, a significant source of U.S. diesel fuel production, tending to face higher prices. The diesel fuel transportation system's ability to efficiently distribute supplies between regions also impacts pricing.
Local market conditions, including the location and ownership of retail outlets, contribute to diesel fuel price variations. Retail outlets owned by refiners may have different pricing dynamics compared to independent businesses that purchase diesel fuel on the wholesale market. High-volume truck stops, for instance, often offer diesel fuel at lower prices than smaller-volume service stations.
The U.S. military's use of diesel fuel in tanks and trucks, as well as for backup and emergency power supply in various facilities, institutions, and utilities, also influences diesel fuel demand and pricing.
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Diesel engine vehicles
Diesel fuel is a liquid fuel designed for use in diesel engines, which are a type of internal combustion engine. Diesel engines differ from other engines in that fuel ignition occurs without a spark, instead relying on the compression of inlet air and the injection of fuel. Invented by Rudolf Diesel around 1892, the first diesel engines were designed for liquid fuels, with the inventor initially using crude oil, petrol, and kerosene for testing. Diesel engines did not run on diesel fuel until the French Otto society built an engine for use with crude oil in 1900, which actually ran on peanut oil.
Today, diesel fuel is a distillate fraction of crude oil, though alternative types of diesel that are not derived from petroleum, such as biodiesel, biomass-to-liquid (BTL), and gas-to-liquid (GTL) diesel, are being increasingly developed and adopted. In the United States, the most common type of diesel fuel is a specific fractional distillate of petroleum fuel oil, though the use of biodiesel and renewable diesel is increasing. The retail price of diesel fuel reflects the costs and profits of producing and delivering the product to customers, with the cost of crude oil accounting for about 50% of the monthly average U.S. retail on-highway diesel fuel prices from 2004 through 2023. Diesel fuel prices often fluctuate, due to factors such as the distance between the retail location and the sources of supply, with areas farthest from the Gulf Coast, the source of about half of U.S. diesel fuel production, tending to have higher diesel fuel prices.
Diesel engines are used in a variety of vehicles, including trucks, trains, boats, and barges, which help transport most of the products that people consume. Diesel fuel is also used in public buses and school buses, as well as most farm and construction equipment in the United States. The U.S. military uses diesel fuel in tanks and trucks because it is less flammable and less explosive than other fuels, and diesel engines are less likely to stall. Diesel fuel is also used in diesel engine generators to generate electricity, particularly in remote villages in Alaska, as well as for backup and emergency power supply in many industrial facilities, large buildings, hospitals, and electric utilities.
It is important to keep diesel-engine vehicles well-fueled, as running low on diesel can damage the fuel system. This is because the poorest-quality fuel settles at the bottom of the tank, and when sent through the fuel system, it can clog or break the fuel pump, filter, rail, and injectors.
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Diesel fuel additives
Diesel fuel, also known as diesel oil, is a liquid fuel designed for use in diesel engines. These engines are a type of internal combustion engine that uses compression to ignite the fuel without a spark. While diesel fuel is typically a fractional distillate of petroleum fuel oil, alternative types that are not derived from petroleum, such as biodiesel, biomass-to-liquid (BTL), or gas-to-liquid (GTL) diesel, are becoming more common.
- AR6500 Diesel Treatment: This additive improves cetane levels, lubricity, and fuel system cleanliness. It helps prevent carbon build-up in injectors and other key fuel system components, resulting in improved engine performance and reduced repair costs.
- Hot Shot's Secret Diesel Extreme: This additive is a fully formulated cleaner that removes harmful internal and external diesel injector deposits, such as polymeric and waxy substances. It combines a cetane booster, a fuel stabilizer, and a water demulsifier to ensure the fuel system operates at maximum performance while reducing excessive smoke.
- Hot Shot's Secret Everyday Diesel Treatment: This treatment can be used at every fill-up to improve maintenance and fuel economy. It contains a cetane improver that enhances engine performance and power.
- Hot Shot's Secret Diesel Winter Anti-Gel: Designed for cold weather conditions, this additive helps improve cold starts, prevent icing and gelling, and reduce fuel line freeze.
- Hot Shot's Secret Diesel Winter Rescue: Another winter additive, Diesel Winter Rescue, is a fuel de-icer that can be used in emergencies to de-ice fuel filters and re-liquefy gelled fuel, restoring engine power and flow.
- Hot Shot's Secret LX4 Lubricity Extreme: As an ultra-low-sulfur diesel additive, LX4 Lubricity Extreme improves fuel lubricity, preventing scarring and wear on essential fuel system components.
These diesel fuel additives offer a range of benefits, from enhancing engine performance and fuel economy to addressing specific challenges posed by cold weather conditions. It's important to note that while additives can provide certain advantages, regular maintenance practices, such as fluid checks and filter replacements, are also crucial for the overall health and longevity of diesel engines.
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Diesel fuel production
Diesel fuel, also known as diesel oil, heavy oil (historically), or simply diesel, is a liquid fuel designed for use in diesel engines. These are internal combustion engines that use compression to ignite the inlet air before injecting the fuel. Diesel fuel is a high-volume product of oil refineries and is standardised in many countries. For example, in the European Union, the standard for diesel fuel is EN 590.
The most common type of diesel fuel is a specific fractional distillate of petroleum fuel oil. However, alternative types of diesel fuel that are not derived from petroleum, such as biodiesel, biomass-to-liquid (BTL), and gas-to-liquid (GTL) diesel, are becoming increasingly common. Biodiesel is obtained from vegetable oil or animal fats (biolipids) and is composed primarily of fatty acid methyl esters (FAME). It can be produced from numerous oils, including rapeseed oil (rapeseed methyl ester, RME) and soybean oil (soy methyl ester, SME).
Diesel fuel can also be produced from synthetic processes. Synthetic diesel is made from carbonaceous precursors, with natural gas being the most important. Raw materials are converted into synthesis gas, which is then transformed into synthetic diesel through the Fischer-Tropsch process. This synthetic diesel is primarily composed of paraffins with low sulfur and aromatics content.
In the United States, most diesel fuel is produced and consumed through the refinement of crude oil at petroleum refineries. U.S. petroleum refineries can produce an average of 11 to 12 gallons of diesel fuel from each 42-gallon barrel of crude oil. The cost of crude oil significantly influences diesel fuel prices, accounting for about 50% of the monthly average U.S. retail on-highway diesel fuel prices from 2004 to 2023.
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Frequently asked questions
Diesel fuel, also known as diesel oil, is a liquid fuel designed for use in a diesel engine, which is a type of internal combustion engine. Diesel fuel is a distillate fraction of crude oil, consisting of hydrocarbons with carbon numbers predominantly in the range of C9–C20.
The retail price of diesel fuel reflects the costs and profits of producing and delivering the product to customers. The cost of crude oil, international demand for distillate fuel, transportation costs, local market conditions, and taxes can all impact the price of diesel fuel.
Diesel fuel is commonly used in diesel engines for transportation, such as trucks, trains, boats, and buses. It is also used in generators for backup and emergency power supply, and in military vehicles and equipment due to its lower flammability and explosion risk compared to other fuels.
