You got to Zee it.

[xdiesel]

My first time using Z products and worth every single penny. Questions to those Z Pros:
1- Is the Clay bar reusable?
2- I used one Z2/Z5 applicator, can I just wash it and reuse it again?
3- Didn't have a good day here in NY to do it sunshine had cloudly/light rain when I did it. I still have the last coat of ZFX on it and it got wet from the rain, am I supposed to let it dry or just buff it off?
4- Is the buffing machine necessary to use at all for Z products?

[NOC]

I can only answer a couple of your questions,
1- Yes, I only use the clay bars for maybe 4-5 times, you dont want to re-use it after it falls on the ground or has big pieces of dirt on it. Allways keep it lubed and store it moist on a zip-lock baggie.
4- Buffing machine is not really necessary but it'll make it look 1million X better, plus it will save you from having a sore arm, try getting a PorterCable, in the long run they are a good investment

In the past I have used only Einzett producsts, Poor Boy's, and Vanilla Moose (1Z I think this is the greatest product lineup) [ Apparently this place is the only internet seller for 1Z products--> http://www.fusionperf.com/subcategory.asp?fusion=7 ]

Good luck and post pics after you are done.