Well, after my first year with my Tundra, there is some rust on the rear axle. Particularly the rear diff housing, axle and springs. So I went out and bought some spray rustproofing and it really does a good job of coating everything. Its like a clear gel that coats the metal. It's supposed to dissolve rust and protect the metal. We'll see. I plan on spraying under the rockers and some of the front too.
Here are some pics after spraying the axle. I didn't think to take "before" pics, but you can clearly see the rust I have after 1 winter. Hopefully this stuff will help.
