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I am a firm believer in evaluating the quality of evidence. For example in medicine, randomized double blinded studies hold more weight than collective individual experiences and even expert opinion. (Although more data points can increase statistical power.)
Although we can group many uoa's together, it won't come close to an industry certification because there are differences in how hard the cars were driven, modifications, and when the oil was changed. Certifications are achieved through specific testing criteria.
Alot of these less abundant oils with great street credibility may be robust, but I am having a hard time being convinced that they are better than a highly certified Mobil 1 5w30 or 10w30 (or penzoil platinum). What are these assumptions/facts based upon? If it was based on uoanalysis, how many uoa's was enough to convince you?
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