I've been using Zaino products on my Elise for two years (Z-5, ZFX, Z-6) with good results. The guy who installed my starshield was raving about Z-CS a while back, so I orderd some and thought I would try it out. I put some on one of my bicycles as a test and it looks good, but I'm not so sure about this stuff. It smells like mineral spirits to me, so I'm wondering if this isn't some sort of "snake oil". I've seen a few posts on this forum who are also pleased with the results, but wondered if others had the same doubts. Does it contain mineral spirits? What does is do to the other products I've used on the car? The explanations on the Zaino site always seem like a bunch of mumbo-jumbo to me. Comments?