I hear you, but i think we need to start being very clear with our language. When you say "the compound itself that is more effective at a lower treat rate."
What do you mean by treat rate and how is the treat rate measured?
Is it in mL of the compound in a carrier solution at some concentration, or grams of the compound, and how is the concentration of the compound in solution measured, mole fraction ?
Then there is the question, more effective at what exactly? Wear reduction? Coefficient of friction ?
Basically, with a good description of the two treatment rates, we should be able to calculate the number of molybdenum atoms being added to the finished oil (normalised to per litre), which then can be correlated with bench test data and VOA ppm Mo.
Not trying to pick a fight here (and a link to that document would be great), but I do analytical chemistry for a living at a large research University (not oil analysis, but solid metals and minerals, so this isn't my exact field), but I just can't quite get my head around some of the statements I see in the UOA section (not you in particular).
Maybe I need to know more about how the various moly compounds behave in an engine, like I said, organometallic chemistry and mech eng isn't my field, I'm strictly analytical inorganic chemistry coming from an atomic physics angle.
Can anybody explain to me, does three units (molecules maybe?) of di-nuclear MoDTC have the same "effect" in an engine oil as two units of tri-nuclear MoDTC? And if it does, isn't this being more effective at a lower treatment rate? Or have i missed something? (Happy to be wrong or mistaken here).
BTW, nice Ref here on how UOAs are measured
How your Blackstone sample is processed by David Newton Used Oil Analysis – we all talk about it, and many can understand the results, but few people have had the opportunity to actually see how the process works. Blackstone Laboratories is an oil analysis lab in Fort Wayne, Indiana. If you...
bobistheoilguy.com
If somebody like Mola could help here, that would be great.