Understanding the ACEA Oil Sequences 2022 Update: Implications for Asia-Pacific Heavy Duty Engine Oil Customers

The ACEA Oil Sequences are intended to clarify the requirements for engine oils compatible with European vehicles. With the 2022 update, the ACEA has introduced significant changes that address the evolving needs of the heavy-duty engine industry, particularly focusing on fuel efficiency, performance, and emissions control.

The Shift in Sequences

The heavy-duty oil sequences have been overhauled with the introduction of the new E8 and E11 categories, which replace the previous ACEA E6 and E9 categories. Moreover, updates to the ACEA E4 and E7 categories with new piston deposit tests signal a shift towards more rigorous standards for engine protection and performance.

What This Means for Fleet Operators

For truck and bus fleet operators in the Asia-Pacific region, the adaptation to these new sequences is more than just a compliance checklist. It represents a move towards enhanced engine protection and efficiency, which can contribute to lower operating costs and improved vehicle reliability. 

Mandatory Compliance and Testing

All new claims against the ACEA 2022 Oil Sequences for Heavy-Duty Engines became mandatory from May 2023. This means that any heavy-duty motor oils available on the market as of April 30, 2022, have a two-year window to comply with the ACEA 2022 Oil Sequences, and products launched after this date have one year to meet the specifications.

The inclusion of tests like the OM471 piston cleanliness test — a demanding 600 hours engine test developed by Daimler — reflects the stringent nature of these specifications. This test is particularly important for fleet operators, as failing it necessitates a time-consuming reformulation and retesting process.

Biodiesel Compatibility and Environmental Considerations

The Asia-Pacific region, with its diverse climate and operational conditions, requires oils that can handle a variety of fuel types, including biodiesel. The continued presence and increased stringency of the OM646LA tests ensure that the new oil sequences meet these needs, thus supporting the region's shift towards more sustainable fuel options.

Transitioning to New Specifications

With the phasing out of specifications like E6 2016, operators must transition to updated versions such as E8 and E11, especially for low SAPS (Sulphated Ash, Phosphorus, and Sulphur) products, which are critical for the latest engine designs. This transition period is a critical time for operators to align with the latest standards to ensure uninterrupted performance and compliance with the update to the ACEA Oil Sequences.

Implications for Product Selection

The update has direct implications for product selection. For instance, products like Delo 600 ADF, Delo 400 XSP and Delo 400 SLK, which are low SAPS, now fall under the new E8 and E11 categories. Fleet operators must thus be vigilant in selecting products that meet these updated classifications to maintain engine health and adhere to environmental regulations. 

The ACEA oil sequences 2022 update is a forward-looking initiative that aligns with global trends in environmental responsibility, fuel diversity, and engine technology. For heavy-duty engine oil customers in the Asia-Pacific region, these changes necessitate a strategic approach to product selection and an investment in lubricants that will support their engines' longevity and performance. 

While this update brings challenges, it also offers opportunities for fleet operators to enhance efficiency and performance, ultimately leading to a more sustainable and cost-effective future.