To keep your cast iron exhaust manifolds looking concours prepared perfect, use Calyx Manifold Dressing. It applies with a flannel cloth and polishes to a silver shine in seconds. After the manifold is prepared with calyx, apply when necessary, very little upkeep is required. Application of the dressing does not require removal of the manifolds. Calyx Manifold Dressing will not burn and is non-toxic. One container, 3 ounces, will do 3 sets of cast iron exhaust manifolds.