This weekend I was exploring under my 4Runner and found that my trans dipstick had cracked in half at the joint (top piece broke off inside the bottom piece) and was leaking a good bit. Since I couldn't get the bottom out, I ended up Steel Sticking the two together. Did a 60 mile test drive and it seems to be holding together great!
While under there, I grabbed hold of my passenger front towhook and had a horrifying experience as it pulled right off of my lower radiator support.......
It looked like it'd fallen off at some point before I got the car, and had been JB welded back on. Guessing that's why it'd been freshly undercoated when I bought it. My current guess is that the rust here was caused by the constant coolant leak the 4R has when I bought it. It'd probably been happening long before then, as well.
The plan for now is to cut out the bad spots and weld in new metal. Probably the best I can do short of buying an entire support from somewhere.
Here's the other side, which looked perfectly fine (I wire brushed and painted all of the support, which is why it's black). The spot in the middle is a chip in the old undercoat.
The rest of the frame had pretty much zero rust on it (apart from a body mount that had a little) so I cleaned it and undercoated it all. Hoping I was able to catch things before they got too bad.