Does Z-AIO replace Z-1?
Yes. While there are differences between each product, Z-AIO adds many more benefits, thus retiring Z-1. Z-AIO contains some cleaning agents, as well as enough gloss & protectant to be a true one product solution for some customers. Z-1 required the use of a subsequent protectant like Z-2 PRO or Z-5 PRO, while Z-AIO does not.