Conventional oils.
What I was getting at was that in the motor oil section the oil came out of the refinery in spec no enhancers for VI needed. Chemicals added where to keep oxygen out of the oil because we had a color requirement and oxygen in oil would oxidize and change the color rating. The other chemicals that where added where detergents for cleaning. Nothing was needed for VI stability or to bring it into specs.
As for the truck loads for gasoline we added approximately 250 CC of there chemical to the loads for there secret ingredients so they could call it theres...