Big Changes Loom for European Market
This article discussing the upcoming ACEA E9 specification.
What I think is great is that the ACEA usually builds upon the emissions requirements but is typically much more stringent on wear, and the new E9 specification would call for a low ash oil but with low TBN - less detergency, less wear (because the anti-wear additives work better with less detergents around).
Just published in the SAE, the paper "Moden Heavy Duty Diesel Engine Oils with Lower TBN Showing Excellent Performance is very promising, improving upon the percieved deficiences with the CJ-4 and SM standards now used. I've taken a few notes on this paper, for those interested.
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