I've been looking into a lot of body shop forums for what those guys use. There are good and bad responses to all products out there. I've seen some die hard Ziebart comments and some horrible ones. In Canada there is a place called Krown that treats cars with a product. There seems to be quite a few good reviews on Krown, and quite a few US people close to the border that have their cars done. We can't get that in the US, but Carwell sells a product that is supposed to be similar called CP-90.
Clicky
The rustproof product is a chemical that attaches to metal and "creeps" into crevices and hard to reach areas. It is applied with a petroleum based product to aid application which eventually desolves and just leaves the chemical. It lasts for roughly a year and then needs to be reapplied. I believe the canadian military uses a similar product on their stuff and I read some limited literature that states the US uses or at least tested this product. The draw back is it can eat some rubber. I read the military application chart and they liberally apply silicone to all rubber surfaces prior to applying this product. They product literature states that when you get a chip the chemical will "creep" into that area to protect it.
Does anyone have information on this or Krown? The US company is in Ohio. Mel's son's rig seemed to stay in nice shape by the previous owner applying ATF every year.
Thanks, Paul