Rust Prevention Hotspots

Hi all, doing some preventative maintenance today with a can of rust stopper since I noticed a bit of shininess on some parts of the frame. I've hit a bunch of the frame welds and I think I've covered it all but I wanted to see if there were any hotspots that I might have missed.

Thanks

 

Parts of frame near exhaust and catalytic converter. The cab mounts hold a lot of sand, so keep an eye on them as well as various rear suspension mounts for leafs and shocks. If your in an area with salt/winter, I suggest you get a full oil spray rust prevention coating like Krown. No vehicle is designed to deal with salt. Don’t worry about rust on exhaust or various driveshaft parts as they are bare steel and no biggie if they rust. Rubber under coats do more damage than good.