It's all about science. You mix oxygen, steel and a little water and you're going to get rust. Now you can take any one of those parts away and No Rust.
Water vapor is in the air so one way to stop rust would be to use a desiccant to absorb the water. Trouble with that approach is that the moisture is still there, it's in the desiccant media, still on site so to speak.
Recently I learned about oxygen absorbers. An oxygen absorber is a packet of iron powder and a little salt to act as a catalyst. In the presence of any water (vapor) the iron turns to iron oxide and the free oxygen is tied up.
Which brings me to my bright idea. Stuff some oxygen absorbers into the tank, use up the free oxygen, tie that bad old oxygen in some iron oxide that's not part of the gas tank.
The tanks back on the wall waiting to see if its going rust or if Science will rule out.
