I see, and thanks for clarifying. Well, I'd guess it depends on the brand. Pennzoil markets it at the high end of their line, so I'd be fairly confident that in their product line, it is indeed superior. So maybe with another brand that puts the "traditional" group III in their top products, maybe not.Well for one thing GTL is also a Group III base, so in that respect it is no different. But yes it can have a higher VI and lower contaminates than some other Group III bases but it's not exclusive. I was just wondering why the other poster thought it resulted in a better finished product.
I've read that it is more expensive than "traditional" oil-based group III, so if true, I would surmise that it would mostly be used when there is indeed an advantage to it.