ACEA’s 2023 Light-Duty Oil Sequence Update

Kirsten Lykke Bach 8 December 2023 Automotive, Passenger Cars

The European Automobile Manufacturers’ Association (ACEA) has once again stepped up to the plate, delivering an updated set of Oil Sequences for Light-Duty engines in 2023. Building upon the changes introduced in their 2021 update, these new modifications aim to not only keep pace with evolving automotive technologies but also to drive improvements in fuel economy and engine performance. In this blog post, we’ll delve into the key changes brought about by ACEA’s 2023 update and explore two significant additions to the ACEA oil categories: ACEA C7 and ACEA A7/B7.

The 2023 Light-Duty Update

ACEA’s Oil Sequences act as benchmarks for engine oil performance standards, ensuring that lubricants meet the rigorous demands of modern engines. The 2023 update is no exception, and it brings forth essential adjustments that respond to the ever-evolving landscape of automotive technology. Among the noteworthy changes are:

  1. Reintroduction of the OM646LA Wear Test to Legacy Categories
    One of the notable updates in the 2023 Light-Duty sequence is the reintroduction of the OM646LA wear test to legacy categories. This move underscores ACEA’s commitment to maintaining the highest standards of engine protection and durability, ensuring that even older engine models benefit from the latest advancements in oil technology.
  2. Addition of a New ACEA C7 Category
    ACEA C7: A Leap Toward Ultra-Low HTHS Performance. ACEA C7 stands out as a groundbreaking addition to the lineup. This new ultra-low HTHS (High-Temperature High-Shear) oil category is specifically designed to enhance fuel economy in vehicles equipped with modern aftertreatment systems. Characterized by its SAE 0W-16 rating, ACEA C7 boasts an HTHS viscosity ranging from ≥2.3 to ≤2.6 mPa·s. It builds upon the foundation laid by ACEA C6, retaining all performance parameters while introducing more stringent fuel economy requirements, with a minimum improvement of ≥0.3% compared to the reference standards. ACEA C7 represents a major leap forward in optimizing engine performance and efficiency.
  3. Introduction of ACEA A7/B7 Category
    ACEA A7/B7: Enhanced Engine Oil for Extended Oil Drain Intervals. The ACEA A7/B7 category addresses the need for stay-in-grade engine oils intended for extended oil drain intervals in passenger cars, light-duty gasoline, and Direct Injection (DI) diesel engines. These oils are tailored for low-viscosity engine applications, featuring an HTHS viscosity range of 2.9 to 3.5 mPa·s. What sets ACEA A7/B7 apart is its comprehensive protection package. These engine oils not only deliver enhanced wear protection but also guard against low-speed pre-ignition in turbocharged gasoline DI engines and turbocharger compressor deposit (TCCD) in modern DI diesel engines. However, it’s essential to consult your vehicle’s OEM owner’s manual or handbook to ensure compatibility, as these engine oils may not be suitable for all engines.

Key Dates and Considerations

Understanding the timeline and requirements for these updates is crucial:

  • First allowable use: Claims cannot be made against the specification before the indicated date.
  • Mandatory for new claims: After the specified date, all claims for new oil formulations must adhere to the latest ACEA Oil Sequences issue.
  • Oils with this claim may be marketed until: After the indicated date, no further marketing of oils with claims to the previous issue is allowed.

In conclusion, ACEA’s 2023 Light-Duty Oil Sequence update represents a significant stride toward enhancing engine oil performance, fuel economy, and protection for modern vehicles. With the introduction of ACEA C7 and ACEA A7/B7, automotive enthusiasts can look forward to improved efficiency and reliability. It’s essential for manufacturers, oil producers, and consumers to stay informed about these updates to ensure their vehicles receive the best possible care and performance.

From our expert Kirsten Lykke Bach

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