Triple_Se7en
$50 Site Donor 2024
What's most inadequate are vehicle owners that don't know the difference between normal manufacturer OCI mileage recommendations and their Severe Service recommendations.But history has proven the API and ILSAC specs inadequate due to the need for continuing "improvements". Some of the sequences allow for a high amount of wear, some rely on visual assessment. Meet or exceed is self-reporting to obtain certification.
Vast majority of us fall under Severe and that's plenty-fine for API / ILSAC specs. Also plenty-fine because these new oils of SP / GF 6a produce less carbon / soot, which cleaning costs over time is more expensive than doing the job right to begin with.
My Euro Oils are SP and the additives group more mirrors Dexos Group than the Euro SL groups.
If you have a USA-typical four cylinder of TGDI / GDI variety - not one of European badges, all those 6-10 OCI / high HTHS / low Noack built Euro-type oils should be traded-in for shorter ILSAC OCIs.
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