It's Napa/Valvoline's warranty that it meets those specs. As I said Plenty of folks run officially un approved oil. Where talking about Valvoline after all. It's a non issue. If there's any oil company to question about meeting specification it probably should not be one of the oldest oil companies like Valvoline.That's not a certification or official approval. You still need to prove it's exactly the same oil as Valvoline branded oil, which was your assertion.
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