Thank you for confirming Amsoil doesn't make their own base stocks.
There's very few sources for raw base oils and much of it is tied up in patents. Does it really matter?
Several boutique oil blenders use Mobil 1 sourced metallocene PAO which is not found in any Mobil 1 commercial oil.
Say you bought some shrimp, sausage, flour for the roux, etc... from the local market and your cajun aunt Mrs. Thibodeaux-Lawry made you a killer gumbo, did she make you that gumbo or did the market make you that gumbo? Is the market's store brand low buck frozen gumbo better than her gumbo? If you hesitate on either of those questions, Mrs. Thibodeaux-Lawry will be coming after you with a broom.
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