On Tuesday I will be washing, claying, and sealing my New Car for the first time. A friend recommended I use a product called "Liquid Glass." Now I've seen it at the Local Pep Boys but have never heard anything about it. The reviews I've found on other websites seem to say it's ans excellent product. From what I've read, the people on this board are very knowledgable. Do you recomend it, and what can I expect for durability?