This may have been discussed before but I did not see any concrete statements. The GM DEXOS approval list (https://www.gmdexos.com/brands/dexos1/index.html) includes several store brand oils and branded oils made by the company, with the same approval number. For example, Amalie Elixir 5w30, some of the Carquest syn 5w30, and some of the STP syn 5w30 have the same approval number (D10397HG049). Does this mean they are the same oil in a different package, or does this just reflect the fact that they were all packaged by Amalie?