Zeus wrote:I’ve used POR-15 in my other bikes tank and 3 years later it’s still doing fine. The trick is to prep it really well , clean and degrease it etc. I’d buy the complete kit that comes with all the stuff you need to do it properly.

Exactly! Must get tank completely free of rust and any contaminants before applying any kind of coating treatment. Otherwise it won't adhere and end up flaking off in couple years, causing even worse problems than rust.

Personally I prefer chemical rust-removal over mechanical agitation/scrubbing methods. It will leave as much good metal as possible. Important when you've got verify old thin metal to preserve as much as possible. Not all chemicals work equally well either. Most acid treatments will remove good metal as well as rust. Only acid that will have preferential attach on rust and leave good metal alone is phosphoric acid. Can be found at Home Depot as concrete rust/stain remove (read ingredients to make sure it's 100% phosphoric acid). Leaves mildly protective phosphate coating over bare metal after rust is removed.

Then proceed with POR-15 treatment process.

I'm considering nickel-plating inside of tank. Anyone had experience with that?