I recently bought a new white Mustang with black matte vinyl racing stripes (factory). The paint has a bit of rail dust on it that the dealer said they could not remove. I see that Iron X is the way to go for this, but has anyone used it around this type of stripes? I have seen some people say that it will only react with metal and not to let it dry on any surface. I want to make sure it is safe before I attempt to clean this up. I am going to clay it afterwards but need to know what is a good sealer that will work with the stripes and the paint that will not ruin them? Thanks!