Yes, they have to pay to put that approval on their packaging.Does GM get any money from oil companies when they advertise as DEXOS approved, or from the testing the companies go through to use the label?
In the case of Amsoil (and others that don't pay), it's a case of "trust us" when they say they meet the spec. They probably do, but they don't need it on their label so why pay for it. Amsoil is tiny in comparison to the oil brands on the shelf at Walmart and auto parts stores.Oh I get it, but they state it meets, (at least) the spec. My point is, you can meet the spec without having the license. The licence is the $$$$ for them.