Rust inhibitors?

[Richm617]

I just brought my car from New England to Florida. I'm planning to spray the car with the Fluid Fill anyone suggest anything else?

The car does have surface rust on the frame, tie-rods, shocks etc. It's 50+ years old so to be expected..

This is not a show car!

Fluid fill seem like a good choice?

I want to stop rust and if I can get rid of the surface rust with a similar product I would be happy.