Understanding EN590: Cleaner Fuel for a Greener Future
EN590 was introduced to align with the European Union’s evolving emission standards, aiming primarily to reduce the sulphur content in diesel fuel. Traditionally, sulphur acted as a natural lubricant, but in Ultra Low Sulphur Diesel (ULSD), this function is replaced by advanced additive packages.
Since 2007, diesel meeting EN590 specifications has been classified as ULSD within the EU. However, the term “Ultra Low Sulphur Diesel” may follow different definitions and regulations in other regions. The EN590 standard outlines the key physical and chemical properties that automotive diesel must meet for sale in the European Union, as well as in Croatia, Iceland, Norway, and Switzerland, ensuring cleaner combustion and lower environmental impact.
Grades of EN 590 Diesel for Temperate Climates
EN 590 was introduced alongside the European emission standards as part of the region’s efforts to improve air quality and reduce harmful pollutants. Over time, each revision of EN 590 has progressively lowered the sulphur content in diesel fuel. Since 2007, diesel meeting these requirements has been known as Ultra Low Sulphur Diesel (ULSD), as the natural lubricating role once played by sulphur is now provided through advanced additive packages.
The EN 590 standard defines the quality specifications for automotive diesel fuels sold across Europe. Although adherence to the standard is not legally mandatory, it is consistently followed by fuel suppliers to ensure compatibility and compliance. EN 590 diesel is designed for use in modern diesel engines and meets the performance requirements of Euro 4 and Euro 5 vehicle standards.
For temperate climates, EN 590 specifies several grades based on limiting filterability temperature: Grade C (-5 °C), Grade D (-10 °C), Grade E (-15 °C), and Grade F (-20 °C). These classifications ensure reliable performance in varying weather conditions. By significantly reducing sulphur levels, EN 590 diesel helps lower sulfur oxide emissions, benefiting urban areas where air quality is a key concern. This cleaner fuel supports both environmental goals and engine performance.
