Had to do an expedition 2 days ago and didnt look like it was washed in maybe 2 years. The wheels were so black from brake dust it looked like it would take me an hour on the wheels alone! Broke out the A2Z sprayed , light scrub, rinse and wow! They looked brandnew! These were chrome / partial clearcoated. I would have just sprayed and rinsed but the layer of dust was so thick it would have taken 2 or 3 apps. Ive found A2Z to be an awesome product as long as you use it carefully and only when needed, it def has a place in my supplies now 
