Rust repair (fixation) – how to do it right ?

[Ivan141]

Apart from the big hole in the back, that rear end looks like it's in pretty good condition.. I would just clean off all the rust you can get to, and then treat it with rust-converter and finish it off by painting with anti-rust primer, finish with a layer of regular paint. You can also just throw on some rustoleum or POR15, but in my experience, that stuff is more difficult to get off when you want to weld it. Since the rear tire slings water into the lower hole all the time, you might benefit from masking the hole off with some spash-guard or something, closing the hole temporarily is more likely to accelerate rust since moisture would stay trapped.

BTW, dont worry about the shape of the panel, you have the other side as a reference, and the big hole is hidden behind the bumper so it really doesnt matter much.