Quote:
Originally Posted by CarPoor
While that is true, I think we are confusing material versus immaterial deviations. Approaching 10% is typically seen as material from my experience and we'd flag it, though I can't say for certain what the SAE or ASTM standards are.
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I agree that 10% is substantial. That's enough to push an oil out of grade, in some instances. It could also just be a perfect storm of variances: 5% on the blending side PLUS 5% on Blackstone's side. That seems unlikely but I wouldn't call it impossible.
Years ago, I had a VOA done for Eneos Sustina 0w50 and it came back WAY out of grade -- also about 10%. I was quite surprised by this and contacted Eneos directly. They replied back and said they'd look into it, but multiple follow-up emails went into a black hole and I never heard back.