I have been stripping my trailer with aircraft stripper. It worked great on the bottom half. From the windows up the finish is baked on (looks cloudy) and the stripper hardly touches it. If I use a fine scotch bright it comes off, but it leaves fine scratches. This would not be a big deal if I was going to polish.
The non scratch scotch brites work, but not nearly as well. I am fairly sure that it is clear coat and not corrosion, as I have done the old "polish test".
Any advice is welcomed.