"Fully formulated" oil is sort of redundant in the sense of "VIN Number" because to be a motor oil is has to be fully formulated to be an oil-- i.e. something you could use for a full crankcase for a full OCI.
The idea is to contrast with something that is either a part of oil (add pack/DIP, base oil, VII) or not oil at all (engine flush, additives, etc).