Be careful...
Worked great for cleaning my boat,  but I did not anticipate that one trip one trip water and the stain from the water was back worse than before.  However I should have known because this is an acid that etches the aluminum to remove the stains which opens the grain to allow it to stain easily.  I would recommend if you use this that’s once your done polish and seal the aluminum and it may last longer.
Rating: 3 stars