The above picture is before I used the rust remover on the frame. As you can see there is an area I used a flap disc to clear off some of the rust.
The next picture is me spraying the Blue Lightening on the truck.
This is all you do is spray it on and let sit. Next use a pressure washer or water house to remove rust and rust remover.
Now for the after picture. Remember there is nothing you have to do but spray it on and spray it off. (Use there metal prep after to stop any flash rust).
There is metal prep on the after picture that's why it looks a little white.