Saturday, Feb 28, 2015 at 09:42
I've treated the steel chassis of a 109 Landrover with Exit-Rust, over 15 yrs ago, and it has performed perfectly as a steel rust-preventative in all that time.
Exit-Rust leaves a dark-blue, iron tannate coating on the steel.
This coating chemically removes all rust and stabilises the surface of the metal and continues to prevent rust from forming.
Iron tannate comes from the bark of poplar trees, and this is the reason there is little rust in areas where poplar trees predominate.
You may have seen the Russian tank video, where a WW2 tank was hauled from a pond in a forest in Eastern Europe, after more than 60 years under the water.
The tank was rust free due to the poplar trees that lined the ponds banks. The trees had added iron tannate to the pond water and thus preserved the tank.
Phosphoric acid is O.K., but it can be washed off easily, and rust reforms when it is washed off.
Fishoil is
well known as a rust preventative, but it can smell for quite a while.
Another product I use is Metalfix rust-preventative paint. It's expensive, but it is 100% effective.
The paint is water based, and it contains phosphoric acid and it reacts with rust to neutralise it, and then seals the surface.
It has no smell, is totally non-toxic, and you can wash your paintbrush out in water.
All you do is scrape off the flaky rust, wash the surface to be treated, let it dry and paint it.
The paint dries quickly and sets hard and resists 1000 degree temperature, acids, oils, pure salt water, and 100 other corrosive elements with outstanding ability.
You can paint over the top of Metalfix with any other paint.
Cheers, Ron.
AnswerID:
546709