Lab and blending accuracy might not be too accurate
One thing I noticed is that no matter how hard you shake the bottle, you still have to refill it 2-3 times halfway with oil and shake vigorously to get all that colloidal stuff from the bottom..... not much different than mos2 or krex or other colloidal additives.
Without a hardware store paint shaker, I doubt that the VOA is super accurate. But, it is close enough not to worry.
I have used it in an abused high mileage 13 year old 2gr-fe and a questionable quality decade old theta-2 and both were definitely quieter. But, same could be said when running Torco SR5, MPT 30k, or Redline oil. I think that some simply might benefit from thicker oils or stouter additive packages. Problem is, got so much $1 quart synthetic SOPUS/XOM/BP oils locally and don't always buy the fancy synthetics.