The real strange thing is that I have not even been making any controversial statements (as I sometimes do ;)) but only stating the fact that all API-SP-certified oils have reduced calcium & added magnesium as far as from what we have seen in VOAs and UOAs to date. But some turned this simple...
"This discussion was not even about API/ILSAC,
- It was about the fact that all new LSPI-certified oils will have reduced calcium and added magnesium soon, and most will carry an API-SP approval as well—indicating global LSPI certification. Some here were disputing this fact, and I was explaining that they were simply wrong and why. The reason is simply because it is unproductive for the additive companies to try to make all-calcium LSPI-certified oils given strict ZDDP limits by any Euro or non-Euro OEM now, as calcium starts linearly increasing the number of LSPI events after 1,000 ppm, and you can't even have half the ZDDP content you need to quench these events to acceptable limits.
You need to understand how oils are made and approved. The additive companies make and preapprove the oils—not the automotive OEMs, not the oil blenders. They are preapproved for blending, labeling, and sale. Then you need to understand that global oil approvals go hand by hand. You cannot separate ACEA/Euro-OEM approvals from ILSAC approvals because both ACEA/Euro-OEM and ILSAC additive packages are made by the same additive companies, and global oil approvals evolve simultaneously. For example ACEA and ILSAC have identical ASTM LSPI tests and test limits. Many of the other ACEA tests are also the same American ASTM tests in ILSAC.
Coming back to ACEA/Euro vs. ILSAC, the main difference is possible higher antioxidant (AO) content in ACEA/Euro-OEM oils. Most ILSAC oils also satisfy or explicitly have some ACEA/Euro-OEM approvals. Extended-performance ILSAC oils with higher antioxidant (AO) content sold here should be as good as or better than the best Euro-OEM oils out there, and some of them carry all the Euro-OEM approvals as well. For example, Castrol Edge 0W-20 SP carries an ACEA-C5 approval, and Castrol Edge EP 0W-20 SP with higher antioxidant (AO) content carries an ACEA-C6 approval and virtually all the strict Euro-OEM approvals