Bob,
I have never seen any documentation that it can do anything. I consider it a snake oil item.
Aluminum oxide is an insulator and forms almost instinctually when bare aluminum is exposed to air. The use of an anti-oxidant prevents the oxide from forming if correctly done. In many cases this required the use of a wire brush to remove the aluminum oxide after the anti-oxidant is applied to the wire. The other thing that helps is that the aluminum oxide is very brittle and the normal installation practices should shatter the oxide providing a bare connection, but if the termination is not "gas tight" the oxide will soon reform and may result in a failed connection. This brittleness is the basis for the use of pre-filled connectors. The crimping action will break the oxide and the anti-oxidant will prevent it from reforming. If you are sure that your connection will remain 100% gas tight, then there is no need for the anti-oxidant.
Don
