Rust inhibitors?

[Hank70SS]

Fluid Fill or Fluid Film. No experience with fluid film bit it will wash/wear off over time.

My chassis was coated with POR-15 some 30+ years ago and is still looking good. It's not cheap but it does work. Prep work is important. Remove any dirt and loose rust scale. POR-15 adheres to the rusty surface and is moisture activated. So it doesn't trap the moisture underneath and promote more rust. It won't adhere well to a bare metal surface, it's meant to applied over a rusty surface. You'll hear good and bad about it. If the prep work is good I think you'll like the results.

It's really thin and smooths out as it dries, no brush marks. Don't get it on you or anything else you don't want it on, it don't come off.