There are several issues to consider when using aluminum for electrical work, most of which have already been addressed by the manufacturers to some degree .
The use of alloys for conductors is strictly limited, because even very low percentages of alloying metals deliberately added [ & not forgetting the inevitable impurities in aluminum originating at the smelter, like silicon and iron ] increase a metal's electrical resistance and susceptibility to corrosion. But aluminum is a very weak metal, difficult to obtain pure because any impurities in the bauxite ore pass into the metal by the only commercial process we have. What is not generally realised is that work-hardened metals have a higher electrical resistance. When drawn through dies, copper wire work hardens so the wire we use is not as electrically conductive as it would be if annealed. Aluminum alloys also age harden naturally [ solid-solution precipitation hardening] which also affects conductivity.
'Anti-oxidant' implies that the join, where the wire changes over to copper wire, requires protection from oxygen. Disimilar metals, in contact and in the presense of an electrolyte can corrode as anode/cathode in an electric cell. The actual electrolyte determines the corrosion- salt water could create chlorides not oxides. You could thus get sulfides, hydroxides, chlorides, carbonates etc. etc.
ALL aluminum surfaces, alloys included, have a thin layer of aluminum oxide on the surface. The metal is extemely reactive, and without this self creating/healing coating would probably burn violently in air!
