The product seems to work but I'm not 100% sure if its removing iron off the wheels as the product comes out already purple, I've always used P&S brake buster with the Tolco spray head and the sprayer on this 16oz bottle doesn't put out enough product, it takes too long to cover entire wheel and tire, and it also doesn't seem very foamy and dries rather quick even in shade on a cool wheel that's pre rinsed unlike P&S brake buster that's very foamy, covers a wide area and sticks on for a long time, I don't know if I got a bad spray head but I in my personal experience the chemical, the amount of the product you get and the spray head needs desperate improvement as they're are better products in the market with bigger bottles and gallons for much less money for similar or better results. As for this I won't be buying AMMO plum again, I have nothing against AMMO and I hope the best for Larry and his business but I have 3 vehicles to clean, 2 full sized trucks and a SUV and the AMMO line doesn't seem fit in for me, AMMO is a premium brand but so is CarPro, Armour detail supply, Gtechniq and many others, AMMO has been around for 10+ years and needs to start considering 32oz and gallon options, the 16oz bottles with the high prices need to change for this to be acceptable.
