Originally Posted by Virtus_Probi
Originally Posted by DrDanger
Originally Posted by Virtus_Probi
That looks like a typical dexos1 Gen 2 VOA to me, maybe except for the titanium level.
I found a synopsis for a paper a while ago that claimed that boron-based additives were good for preventing a high level of magnesium-based detergents from interfering with the beneficial MoS2-ZDDP interaction, and there is a good dose of boron shown here.
I wish I could find a pic of the back of the bottle to see if a d1G2 license # is shown there! The STP website didn't mention anything about it, though.
Would 1000ppm magnesium qualify as high?
I lost track of that paper and didn't find it just now with a quick google, I guess I would have to find my old post on this topic to find the paper again, I'm not sure what levels of magnesium were used in that study.
700-1000ppm of magnesium seems pretty typical for a d1G2 oil now, going back 5 years or so I only saw some flavors of M1 near that level as well as some Castrols that had some that I think were as high as 1400-1500ppm. I don't think I've ever seen 2000-3000ppm for magnesium like used to be very common for calcium (and can still be found!).
That paper was very interesting to me as it showed that there was a downside to magnesium based detergents that had to be addressed with other elements of an oil formulation, I made a logical leap and assumed that must have been one reason why calcium levels were generally much higher than those for magnesium in mass market oils when I started paying attention to how they were formulated. The discovery of the calcium-LSPI link messed things up and magnesium is suddenly very popular in oil!
Sodium in the presence of calcium was also found to be a strong accelerant for LSPI events and d1G2 oils seem to be showing very low sodium levels.
BTW, I would be fine for using that oil for topoffs and would consider it for a full change if it is sold in 5qt jugs and I found it at a good price!
Tried looking for it too. You're on point here, Virtus'