Every decade, I strip the frame and use ‘Frame saver’ on the inside. Velo Orange sells it if you can’t find it online. If you bring your bike inside on a cold day, humidity inside the frame condenses. Not good. Frame saver coats the steel to prevent rust.

Every strap has clear plastic helicopter tape (on the frame) beneath it, to prevent strap/silt abrasion. If anything touches or hits the frame, it gets covered.

If and when you repaint your frame, get it powder or ceramic coated. Both last much longer than paint. Keep steel bikes paint touched up. Rust is like a cancer, it spreads below the paint.