Never heard of Zepher Pro 40 but am sure it will work just fine. I use Blue Magic bought from Walmart $5, they also carry Mothers for about the same price. If you live near a truckstop look there as truckers use lots of this kind of cleaner-polish on aluminum wheels and other parts.
A friend, who is the original "clean freak" uses Zepher and swears by it. He did my wheels (which were badly neglected) and they came out great. Also tried it on the aluminum fenders and roof to side cove my enclosed trailer and it did a fine job. I have some Zepher on order but I park my Wing at his house often enough to get the wheels cleaned by him... LOL