I did not see an application of polish like an all in one or a full polish product. Zaino makes them, but you can use anyone's as long as you prep for Z2 after. Remember, this is the most crucial step: Prepare your paint by getting most of the little scratches off and make it a nice, smooth surface. The more coarse cutting products- like Zaino's ZPC- will have a more intense affect here. But *any* application of polish will help. I would *at least* start with Zaino's all-in-one as a base for the Z2.

I have not ever used Z5. I just use Z2 and ZFX. Oh- Store the tiny bottle of ZFX in your fridge. That's right! If you don't, it will turn to gel in a year. It's so expensive, I tried to find a way to keep it forever. The ZFX in my fridge has been there for over three years. I don't know what Zaino would 'officially' say about that. I used it last week and it worked fine.

I just get a small amount of Z2- like less than 1/2 of one of the little bottles- and add a couple drops of ZFX to it in a mixing bottle they provide. You have to apply it VERY thinly to the car. Zaino's mantra is always "Less is more." This mantra works whether it is polish, wax, Z6, anything. Even the clear seal says that about a QUARTER OUNCE will do a whole car. They may charge a bunch, but they do want us to use them a long time!

Another trick is to sort of 'cure' the applicator with a few light sprays of Z6. This will make the applicator less thirsty. I use one of those foam hand held applicators. By the time you get to Z2 applications, your paint should be super smooth so the application will not require a lot of force.

Except for the few drops of adding in ZFX and shaking the bottle, this type of process works with pretty much any wax/sealant application.

Good luck! Post pics!