Mustang seats recommends only using Armour All on it's seats.
ACtually they recommend ProtectAll.
Washing, Waxing & Treating Seats and Accessories
Mustang seats and accessories are made of the highest quality vinyl and will retain their looks for years without any extra care. Mustang seats can be washed with any mild, non-abrasive detergent. Mustang recommends ProtectAll™, a do-it-all type of cleaner that cleans, polishes, waxes, treats and protects every surface. ProtectAll™s water repellent carnauba wax formula provides durable protection against all elements. The quality of carnauba wax, incorporated into the formula, is largely responsible for providing durable protection. Simply spray, wipe, and polish dry for a beautiful, durable, lasting shine.
ProtectAll's™ anti-static property is ideal for treating vinyl to a clean, dry natural appearance. It leaves NO oily film to attract dust and dirt. With regular use, ProtectAll™s highly effective UV absorber additive helps to protect all surfaces by absorbing the UV light rays and blocking them from reaching the finish.