For an idea of how durable it is please check out the extreme testing I did at the end of my review. There is also a Q&A with Dr. G. Of Optimum. This should answer some of your questions. http://www.autogeekonline.net/forum...ew-extreme-testing-opti-coat-2-0-cquartz.html
That is an awesome review you did, great work and thanks for having taken the time to put everything together, I'm sure it was not easy to do.
