Rant: That 'magic' rust remover gel from the ad left a huge stain on my truck frame
I saw a video ad for this gel that promised to eat rust in 15 minutes, so I tried it on a spot on my old F-150's frame last weekend. I followed the instructions, left it on for the full time, and rinsed it off. The rust was gone, but it left a weird, white, chalky stain about the size of a dinner plate that won't come off with soap or a pressure washer. I feel like the ad only shows the 'after' of the rust, not the weird mess it leaves behind. Has anyone else had this happen and found a way to fix the stain it makes?