303® Products 30308 Aerospace Protectant™, 16 OzOriginally engineered for aerospace and aviation applications, 303 aerospace protectant has found its way into millions of homes for day to day use on vehicles, sports equipment and more. Unlike many protectants that leave greasy residues, aerospace dries to a clear matte finish without a trace of oil. And because its water based, this protectant is safe to use on all products, from your vehicles paint job and leather seats to internal engine parts.