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deposit build-up on the undercrown or in the cooling chambers. This deposit build-up will thermally insulate the piston and lead to excessively high temperatures as the lubricant can no longer provide sufficient cooling. In extreme cases this can lead to catastrophic failure of the piston. Undercrown deposits are a rated feature of the Daimler OM471 test. In being exposed to this excessive heat, the inclusion of the Volvo T-13 Engine Oil Oxidation test is a critical pairing and also emphasises the role of modern oils as cooling lubricants more so than in the past.
Registration timelines For the lubricant marketer, ACEA 2022 claims are possible from 1st May 2022. New ACEA 2016 claims can continue to be made for 12 months (May 2023), but all claims from May 2024 must conform to ACEA 2022 (reference Figure 3).
Engine lubricants that carry the ACEA 2022 heavy-duty industry approval, enable oil marketers to deliver and position higher-performing engine lubricants that exceed the new specifications. They also assure fleet owners and operators that their modern heavy-duty diesel equipment is protected and able to deliver performance benefits demanded by heavy-duty commercial vehicles around the world.
Looking ahead Figure 2: Daimler OM471 Piston. Source: Lubrizol
ACEA’s recognition of the need for a new piston cleanliness test utilising steel pistons reaffirms the industry need for lubricants that deliver improved performance and provide engine cleanliness protection in more heat-intensive operating environments.
Change is constant in every aspect of our daily lives and the commercial vehicle market is no exception. With the ACEA 2022 release, and specifically the introduction of the ACEA E8 category for low SAPS lubricants, existing ACEA E6 approved lubricants in the market today may not be able to deliver the high performance demanded by ACEA E8. The new ACEA E8 category presents an opportunity for lubricant marketers to upgrade their commercial vehicle product portfolio in terms of both performance and quality as well as enabling alignment with the latest generation of hardware in the commercial vehicle fleet. In parallel, OEMs will continue to focus more and more on increasing efficiency and reducing emissions in accordance with the latest legislation requirements whilst maintaining durability. While the release of the ACEA F category for fuel-efficient lubricants was not part of the ACEA 2022 update, its future release will continue the path to enabling lower HTHS viscosity grade lubricants, to deliver additional fuel efficiency benefits with approved OEM engine hardware and aftertreatment devices to meet the future commercial vehicle market drivers.
Figure 3: Registration Timelines. Source: Lubrizol
LINKS
www.lubrizol.com
www.lubrizol360.com
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LUBE MAGAZINE NO.170 AUGUST 2022
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