My roomate, a chemical engineer student(no he doesn't make drugs) mentioned that it's the first time he sees a product repel both water and oil. Notice how mud and cement doesn't stick at all? I was thinking of doing the windsheilds, would be favourable when mudding. But then, Imagine doing the WHOLE TRUCK. Then, you rock crawlers won't be so scared of the mud. It would be nice to know if it repels salt too, making it totally worth the price. My other roommate, aprofessional kayaker, did some more research and found that application takes an hour, and last years. Can be tinted, but is not totally clear in pure form - you can see a faint yellow tint in some examples.