Great product!!! After seeing your Sharkhide metal protectant on Two Guys Garage, I decided to give it a try. I use it on custom aluminum wheels that I use during the winter. Normally, road salt causes bad corrosion on aluminum wheels. But with Sharkhide, my wheels look as nice as the day I bought them. Now I use Sharkhide on all of my wheels, my aluminum trailer, and the aluminum A/C lines on my vehicles. Great product!! I recommend it to everyone!