Ameer Randolph
Diesel fuel is a refined form of crude oil, with diesel engines requiring high-cetane diesel to ensure high performance. While premium diesel is widely available in the UK, it is not always necessary for all vehicles. The most common type of diesel is either city or low-sulphur, depending on the station, and is the cheapest option. Premium diesel, such as Shell V-Power, BP Ultimate, and Tesco Momentum, burns faster and more efficiently, improving engine performance and cleanliness. However, the difference in performance is marginal for everyday vehicles, and supermarket fuel is often adequate and more affordable.
| Characteristics | Values |
|---|---|
| Commonly used premium diesel | Shell V-Power diesel |
| Cheapest type of diesel | City or low-sulphur diesel |
| Diesel with active technology | BP Ultimate diesel |
| Supermarket diesel | Tesco, Asda, Sainsbury's, Morrisons |
| High-octane fuel | Total Excellium Unleaded, Shell V-Power Unleaded |
| High-cetane diesel | Shell V-Power diesel |
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What You'll Learn
Premium diesel vs. low-cost diesel
When it comes to choosing the right diesel fuel for your vehicle, there are two main options: regular diesel and premium diesel. While regular diesel, also known as low-cost diesel, is the most common type of diesel fuel, premium diesel offers several benefits that may make it a more attractive choice for some drivers.
One of the key advantages of premium diesel is its potential for improved engine performance. Premium diesel contains additional performance-enhancing additives that are designed to optimise engine performance, fuel economy, and reduce engine wear and tear. These additives help to clean the engine, removing soot and other deposits from the fuel injection system, which can lead to improved fuel efficiency. A cleaner engine also means higher performance and a smoother drive. Additionally, premium diesel has a higher cetane number, which can help your car ignite faster, especially during cold starts.
While premium diesel offers enhanced engine performance and fuel efficiency, it comes at a higher price. Low-cost diesel, on the other hand, is the most affordable option available at the pumps. It is commonly known as city diesel or low-sulphur diesel, depending on the filling station. Despite being cheaper, low-cost diesel is suitable for most modern cars, and many drivers opt for it due to its convenience and cost-effectiveness. Supermarkets like Tesco, Sainsbury's, Asda, and Morrisons offer low-cost diesel, attracting customers who are looking for a quick and budget-friendly fill-up.
However, it's important to note that the performance and longevity of your vehicle should also be considered. While low-cost diesel may be suitable for everyday use, premium diesel can provide benefits that may save you money in the long run. By using premium diesel occasionally, you can help maintain a clean fuel system, potentially avoiding costly engine repairs in the future. This is especially beneficial for performance cars, where the higher-quality fuel can make the most of the vehicle's capabilities.
In conclusion, the choice between premium diesel and low-cost diesel depends on various factors, including your vehicle's requirements, performance expectations, and budget. While premium diesel offers enhanced performance and engine benefits, low-cost diesel remains a widely used option due to its affordability and ease of access. Ultimately, the decision rests with the driver's priorities and the specific needs of their vehicle.
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Shell V-Power diesel
While some drivers believe that all fuel is the same, there are differences in quality between brands. Premium diesel, for example, burns quicker and more efficiently, resulting in higher performance and a cleaner engine. It features chemicals designed to remove soot deposits and other build-up from the engine's fuel system, which can improve performance and fuel economy over time.
However, the benefits of using premium diesel are debated. Some users report marginal gains in fuel efficiency and engine cleanliness, but these may not offset the higher cost of premium diesel. Additionally, the impact of premium diesel on engine performance may be negligible for everyday driving, with one user stating that the difference is "marginal at best in day-to-day driving."
For those seeking the best diesel fuel in the UK, the options include premium fuels like Shell V-Power diesel and BP Ultimate diesel, as well as cheaper alternatives from supermarkets like Tesco, Sainsbury's, Asda, and Morrisons. While supermarket fuel may be of slightly lower quality, it is still suitable for modern cars and can provide significant cost savings, especially for those covering many miles. Ultimately, the choice of diesel fuel depends on individual preferences, vehicle requirements, and cost considerations.
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BP Ultimate diesel
When it comes to diesel fuel in the UK, there are a variety of options available, including standard, premium, and supermarket fuel. While standard diesel, also known as city or low-sulphur diesel, is the most common and cheapest type, premium diesel offers improved performance and engine cleanliness. BP Ultimate Diesel is a leading example of premium diesel, known for its active technology that enhances engine performance and fuel efficiency.
The use of BP Ultimate Diesel can lead to noticeable improvements in fuel efficiency. By removing dirt and build-up, this premium diesel fuel ensures that your engine operates more efficiently, resulting in reduced fuel consumption. This not only saves you money on fuel costs but also contributes to a more environmentally friendly driving option. Additionally, a cleaner engine can lead to higher performance, allowing you to get the most out of your vehicle's capabilities.
While BP Ultimate Diesel offers enhanced performance and engine cleanliness, it's important to consider the availability and cost. BP fuel stations are widely accessible across the UK, making it convenient for drivers to fill up with BP Ultimate Diesel. However, as a premium fuel, it comes at a higher price compared to standard diesel or supermarket fuel. For drivers prioritising performance, engine maintenance, and fuel efficiency, the benefits of BP Ultimate Diesel can outweigh the higher cost.
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Supermarket fuel
While some believe that supermarket fuel may be of slightly lower quality or have fewer additives than premium fuels, others argue that the difference is marginal. In fact, most supermarket fuels come from the same refineries as premium fuels, and the refining process in the UK is regulated, ensuring consistent quality.
The main difference between supermarket and premium fuels lies in their additives. Premium fuels have additional chemicals designed to improve engine performance and cleanliness, resulting in higher prices. However, these additives may not be necessary for modern cars, as evidenced by many drivers who use supermarket fuels without any issues.
Ultimately, the choice between supermarket and premium diesel fuel depends on individual preferences and vehicle requirements. Supermarket fuels offer a cost-effective option, while premium fuels provide potential benefits for specific engines. It is worth noting that factors such as local competition and regional variations can also impact the price and availability of diesel fuel in the UK.
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Cetane number/rating
Cetane number, also known as cetane rating, is a measurement of the quality or performance of diesel fuel. It is an indicator of the combustion speed of diesel fuel and the compression needed for ignition. The higher the cetane number, the better the fuel burns within the engine of a vehicle. This is because a higher cetane number results in a shorter ignition delay, meaning the fuel ignites more easily and readily due to compression. This leads to more complete fuel combustion and fewer emissions.
The cetane number of a fuel is defined by finding a blend of cetane and isocetane with the same ignition delay. Cetane has a cetane number of 100, while isocetane's measured cetane number is 15. Once the blend is known, the cetane number is calculated as a volume-weighted average, rounded to the nearest whole number.
The cetane number is similar to the octane rating in that it is a rating assigned to a fuel to rate the quality of its combustion. However, octane ratings rate gasoline, while cetane rates diesel. Just as higher-performance gasoline vehicles require fuels with a higher octane rating, high-performance diesel vehicles require fuel with a higher cetane rating.
The cetane number is an important factor in determining the quality of diesel fuel, but it is not the only one. Other measurements of diesel fuel quality include energy content, density, lubricity, cold-flow properties, and sulfur content.
Premium diesel fuels typically have higher cetane numbers than regular diesel fuels. For example, in Finland, premium diesel fuels have a minimum cetane number of 60, while Neste MY Renewable Diesel has a minimum cetane number of 70. In North America, the minimum cetane number for diesel fuel is set at 40, while in California, the minimum cetane number is 53.
Some diesel equipment owners use aftermarket additives known as cetane improvers to boost their fuel's cetane number. However, these products can be risky due to the amount of guesswork involved. A safer approach is to use a premium diesel fuel with a cetane improver already built-in, such as Cenex Roadmaster XL or Cenex Ruby Fieldmaster.
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Frequently asked questions
Premium diesel fuels such as Shell V-Power diesel and BP Ultimate diesel are considered to be the best quality diesel fuels in the UK. Premium diesel burns quicker and more efficiently, delivering higher performance and a cleaner engine.
Premium diesel has a higher cetane rating than regular diesel, which helps a car to ignite faster. Premium diesel also contains cleaning agents that reduce engine build-up, improving fuel efficiency and engine performance.
The most common type of diesel, known as either city or low-sulphur, is the cheapest type of diesel in the UK. Supermarkets like Tesco, Sainsbury's, and Asda also offer cheaper diesel fuel, although it may be lower grade.
Premium diesel is worth the extra cost if you are seeking higher performance from your vehicle. However, if you are not concerned about performance, regular diesel will suffice as it functions the same as premium diesel.
Shell V-Power diesel is one of the most commonly used premium diesel fuels in the UK and has a high octane rating.
