Simple Green is probably the answer, but as an alternative intextsolutions might possibly be of interest. That product contains Carnauba wax and kaolin clay.
<<Carnauba car wax repels water and, consequently, most contaminants. When applied to any surface, carnauba retains these characteristics. Therefore, an application of a carnauba-based car wax to your vehicle will protect it from UV rays, heat, moisture, oxidation, and environmental contamination. And it looks like a million bucks!
The drawback of carnauba waxes, if you can call it a drawback, is that it does not last as long as a synthetic sealant. A carnauba car wax finish will wear off in approximately 6 to 8 weeks. It depends heavily on the climate in which you live and whether or not your vehicle is garaged. Daily commutes in a hot, humid climate mean a shorter life span for your carnauba wax coat. If you enjoy regular waxing, then the life span of a carnauba wax is just one more reason to indulge in your favorite hobby!>>