[lupo]

CLR is really lightweight stuff. Rust remover/ metal prep from restoration supply companies are much more aggressive and do the job much faster. When you get a good rust remover dump it down in all your welds. Cab corners , inside your doors , inside your rockers. A quality metal prep with zinc when you have your vehicle down to bare metal and you don't want to paint wipe a little rust remover prep on the panel and it'll stay rust-free for months in your shop.