Been using this for many years in my 66 Shelby GT350. Noticed some dramatic differences in several elements the last 2 years, suspected these were due to a reformulation so ordered a VOA, suspicions confirmed...
What have you been noticing?
Typical Blackstone reporting low. The ZDDP concentration should be in the 1200-1400 ppm range. Otherwise, I don't see the issue. Even if that ZDDP concentration was accurate, that's not an issue except for the most extreme of environments.
VR1 is essentially just conventional white bottle Valvoline that's been top treated with some additional ZDDP.
Additive package changes, big increases in Titanium, magnesium (which were essentially 0), and boron, Smaller increase in molybdenum. Also large decrease in sodium.
Don't think the slightly lower zinc is due to Blackstone but to the formulation change. Prior to that zinc was always reported at ~1300.
What have you noticed with its performance in the engine? I have several engines local to me running this oil with no ill effects after the reformulation. One of them is an NHRA Stock Eliminator flat tappet cam engine with extreme lobe intensity.
I saw a VOA of it right after the formula changed and the zinc was >1400 ppm with phosphorus at >1200 ppm. Regardless, I wouldn't be worried about it.
I made a side-by-side comparison of the old and new formula based on that VOA.