Tests are done on products to satisfy customers of its performance. A customer can choose between two products if, and only if, the same tests are carried on the two products.
It is against this background that ISO, ASTM, IP etc., tests may have evolved. In short, a uniform or standard test adopting uniform or standard procedure for testing and delivering the same result would be termed consistent. It would be grossly unfair to the customer if results ( for any two products) are given where parameters (for testing) are different from the standard procedure.
Innovation, or tailor made tests, are a good practice. But this has to be as an "add-on" and revealed with an analysis and an appropriate conclusion. This would be fair to the custmer.
Thus, with relevance to the topic "4-ball Wear Test - Slick Marketing," if the Amsoil product meets the above criterion then it has been fair to its existing customers and potential customers.
I invite the readers to debate on this.
M Hussam Adeni