There seem to be dozens of companys offering similar products that are all "moisture cured urethenes". Por15, Rust Bullet, chassis saver,
Eastwoods encapulator just to name a few. They all seem to be pretty similar. I did a lot of web researching and finally decided to try a quart of this;
http://www.masterseriescoatings.com/index/I liked the price better compared to some of the others. I used in on the channel under the back of my bed. It seems to go on good, but I painted over it with cheap black paint because I didn't like the look of the silver.