Sylvie Willis
Diesel fuel in Australia has a minimum cetane rating of 46, which indicates how well the fuel burns in an engine. While there are different types of diesel fuel, such as renewable diesel, synthetic diesel, and biodiesel, the base fuel for all diesel in Australia is the same blend. The main difference between diesel types is the additives that companies add to the base fuel. These additives are meant to improve the fuel in various ways, such as cleaning the engine and improving performance, but their effectiveness varies. Premium diesel, for example, has additives that may help keep the engine cleaner, but the performance benefits are often small or non-existent for everyday driving. Unless a vehicle specifically requires premium diesel, regular diesel is typically sufficient and more cost-effective.
| Characteristics | Values |
|---|---|
| Fuel quality standards | All petrol and diesel in Australia must adhere to the strict standards set by the Fuel Quality Standards Act 2000. |
| Base source | Most fuel in Australia comes from the same base source, with fuel companies adding their own mix of additives. |
| Premium diesel | Contains extra additives that may improve engine performance and cleanliness. However, the benefits are often small, and regular diesel is sufficient for most drivers. |
| Cetane rating | A measure of a diesel fuel's ability to ignite quickly. Australian diesel must have a minimum cetane rating of 46. |
| Sulphur content | Since 2009, all Australian diesel has been ultra-low sulphur, with a maximum of 10 parts per million (PPM) sulphur content. |
| Biodiesel | Australian regulations allow for biodiesel to be added to standard diesel in up to 5% volume without labelling. Higher blends, such as B5 and B20, are also available. |
| Winter diesel | Not commonly found in Australia due to the warm climate. However, it may be available in colder regions like Tasmania during winter. |
| Popular brands | BP, Shell, and Mobil are commonly mentioned as trusted diesel fuel providers in Australia. |
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What You'll Learn
Premium vs regular diesel
In Australia, diesel must have a cetane rating of at least 46 to ensure it performs well. Both premium and regular diesel meet the same basic quality standards set by the government, so you can be sure the fuel you're buying is of decent quality regardless of which type you choose.
The main difference between premium and regular diesel is that premium diesel contains extra additives. These additives are supposed to help clean your engine and improve its performance, but there is little evidence to suggest that they make a significant difference. The additives in premium diesel may help keep your engine cleaner over time, which could be beneficial. Fuel companies are tight-lipped about what additives they use in their premium diesel products, but it is believed to be a range of detergents designed to clean soot and other deposits from the inside of the engine.
The benefits of premium diesel are most useful for vehicles that specifically need them. For many drivers, regular diesel is sufficient and more cost-effective. Unless your vehicle specifically requires premium diesel or you notice a significant difference in how your car runs, regular diesel is typically the best choice.
In extremely cold conditions, such as in alpine regions, it is not uncommon for a special blend of diesel to be sold to prevent the fuel from solidifying or 'waxing up'. This is known as winter diesel and has a lower 'cloud point', which is the temperature at which the fuel starts to crystallise and solidify.
In summary, while premium diesel may offer some benefits in terms of engine cleanliness and performance, regular diesel is sufficient for most drivers and meets the same basic quality standards. The decision between premium and regular diesel ultimately depends on your specific vehicle needs and budget.
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Cetane ratings
The cetane rating of diesel fuel is important because it affects the performance of the fuel in an engine. A higher cetane rating indicates that the fuel will ignite more easily and burn more efficiently. This can lead to improved engine performance and fuel efficiency. It can also reduce the amount of smoke and emissions produced by the engine.
While regular and premium diesel fuels in Australia meet the same basic quality standards, premium diesel fuels may have higher cetane ratings due to the use of additives. These additives are intended to improve the performance and cleanliness of diesel engines. However, it is important to note that the benefits of these additives may be negligible in practice.
The cetane rating of diesel fuel can vary depending on the source of the fuel and the additives used. For example, renewable diesel, which is made from vegetable oil, synthetic diesel, which is made from natural gas or plant materials, and biodiesel, which is made from vegetable oils, animal fats, or cooking oils, can all have different cetane ratings. In some cases, the cetane rating of diesel fuel may also be affected by the temperature and weather conditions, with special blends of diesel being sold in colder regions to prevent the fuel from partially freezing or gelling.
Overall, while cetane ratings are an important factor in the performance of diesel fuel, the specific benefits of premium diesel fuels with higher cetane ratings may not always be significant. Regular diesel fuel sold in Australia meets the minimum quality standards and is suitable for most vehicles.
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Diesel fuel additives
In Australia, diesel fuel sold must have a cetane rating of at least 46. This rating indicates how well diesel fuel ignites and burns in your engine, with faster being better. Premium diesel has extra additives that are meant to improve the fuel in various ways, such as helping to clean your engine and improving performance. However, there is little evidence to suggest that these additives make a significant difference.
Some companies market their premium diesel with names such as 'Premium Diesel', 'Ultimate Diesel', and 'Techron Diesel'. While the specific additives may differ, the goal is the same. Biodiesel, for example, is refined from vegetable oils, animal fat, or cooking oil, and can be added to standard diesel in Australia in small quantities without extra labelling. Renewable diesel, which is made from renewable sources like vegetable oil, and synthetic diesel, made from natural gas or plant materials, are also options, though they are less common in Australia.
There are also fuel additives that can be purchased separately and added to your fuel tank. These additives are meant to improve the performance of your engine and fuel economy, as well as address issues such as carbon build-up and poor combustion. Examples of these additives include AR6500 Diesel Treatment, Hot Shot's Secret Everyday Diesel Treatment, and Hot Shots Extreme. Some additives are also designed for use in cold weather, such as Hot Shot's Secret Diesel Winter Anti-Gel and Diesel Winter Rescue, which help to prevent gelling and improve cold starts.
While the use of additives may provide some benefits, it is important to note that, in Australia, the basic quality of fuel remains largely the same across different brands due to strict regulations. As such, regular diesel is typically sufficient for everyday driving, and premium diesel is only necessary for vehicles that specifically require it.
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Diesel fuel brands
In Australia, diesel fuel brands offer both regular and premium diesel options. While the base fuel for all diesel in Australia is the same blend, fuel companies differentiate their products by adding their own mix of additives. These additives are meant to improve the fuel in various ways, such as helping to clean your engine or improve performance. However, the benefits of these additives are often not significantly noticeable, and regular diesel is typically sufficient for everyday driving.
Some well-known diesel fuel brands in Australia include BP, Shell, Mobil, Caltex, and Woolworths. BP, Shell, and Mobil are often regarded as providing higher-quality fuel, while Caltex and Woolworths have faced questions about their diesel quality in the past. BP, in particular, is known for guaranteeing the quality of its fuel at the bowser, ensuring that it meets the required standards.
Premium diesel options are available from various brands, often marketed with names like 'Premium Diesel', 'Ultimate Diesel', and 'Techron Diesel'. These fuels contain additives that are supposed to enhance engine performance and cleanliness. However, the benefits may be more noticeable in older vehicles or those with higher mileage. For newer vehicles in good mechanical condition, the extra expense of premium diesel may not offer significant advantages.
In addition to regular and premium diesel, there are also different types of diesel available in Australia, such as renewable diesel and biodiesel. Renewable diesel is made from renewable sources like vegetable oil or synthetic diesel made from natural gas or plant materials. Biodiesel, on the other hand, is derived from vegetable oils, animal fats, or cooking oils. While renewable diesel has not gained much traction in Australia, biodiesel can be added to standard diesel in small quantities without extra labelling.
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Biodiesel
The use of biodiesel offers environmental benefits over fossil fuels. For example, biodiesel produced from waste vegetable oil can result in significantly lower greenhouse gas emissions compared to diesel. Biodiesel made from tallow or canola can also lead to reduced emissions.
While biodiesel provides advantages in terms of sustainability, it is important to note that the emissions associated with biodiesel can vary depending on the feedstock used during production. Additionally, the availability and adoption of biodiesel in Australia may be influenced by factors such as export demands and the debate surrounding the production and investment in biofuels.
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Frequently asked questions
Diesel fuel is a result of processed crude oils. It has a cetane rating that tells you how well the fuel burns in an engine. In Australia, diesel must have a cetane rating of at least 46.
All diesel fuel sold in Australia meets or exceeds a cetane rating of 46. The base used for all diesel in Australia is the same blend and will run the same, regardless of the vehicle. The difference is in the additive packages put into the fuel by different companies. Premium diesel has extra additives that are supposed to help clean your engine and improve its performance, but there is little evidence to support this.
Some examples of diesel fuel brands in Australia include BP, Shell, Mobil, Caltex, Woolworths, and Vortex Diesel.
Premium diesel has additives that may help keep your engine cleaner, but for everyday driving, the performance benefits are usually small or non-existent. Regular diesel is typically fine and will save you money unless your vehicle specifically requires premium diesel.
