Originally Posted by
cafe latte
I realized you were having a friendly dig :D, but weak coffee is not my cuppa :D
Imo wax DOES protect the paint, I agree shade is a big one, but paint as it gets older does not repel water the same, stone chips expose the metal for example. Wax prevents rust it also makes the water run off quickly too.
The Defender is aluminium true, but I have owned a Rover p6 in the past with aluminium panels and it corroded just the same except the corrosion was white not brown.
Chris