Somebody correct me if I'm wrong, but it looks like the Mg detergents are not sulfonates (possibly salicylates), but the Ca detergents are sulfonates. Therefore, the 1% limit in dexos1 for SA (Sulfated Ash) would apply to the ~1,000 ppm (1%) Ca we see on UOA/VOAs ??? Many Gen1 dexos1 oils had very high Ca, around 2,000 ppm or so, meaning this 1% limit is for Gen2 only ???
I know you don't want too much sulfur in gasoline, since it forms too much sulfuric acid in the oil, and needs detergents to help neutralize those acids.
Here we see Amsoil exceeding the dexos1 SA limits. Whats the downside of this? I guess they do it to form a long-drain oil. But why would they need to if Mg detergents (I assume) are sans sulfur?