Congratulations guys on seeing for yourselves that oils change,add packs are changed forever and actually the SM/GF4 add packs will be every bit a good as the older ones with much improved volatility and piston deposit control. Actually the whole matrix of a average GF4 oil using at least a grp II base will perform like a syn of old in many ways.
The Mass Spec tests that the lab is delaying on Zoil is much the same technology, using adds that we haven't explored in depth here and that work very well.
Prediction : Pennzoil/Shell didn't make a mistake, they are switching over to the new add packs and that is what you see here. They may have mistakenly added the basic add pack to the HM oils base package in this case but I do not see a problem with the chemistry from my point of view.
Hats off to Johnny for his rush to investigate, you are truly a gentleman and Shell should take note bro !
Confirmation : Blackstone does a better job than our current in-house lab at accuracy ! The fact that Ryan reran and went out on his own to procure off the shelf oils is a testament to customer service we are trying to provide.
millerl if you had problems with Bklabs you did not try hard enough to research the issue in my limited estimation. I am a complete pain in the buttocks to my contract labs if they aren't accurate. BKlabs is the least trouble to date for Dyson Analysis.
Of course I am always looking for that better bang for the buck !!