What can I use or do to get rid of surface rust?

 

Cut & replace or wait and then cut & replace.

 

What are we talking about? Floor pans? Suspension, diff type stuff?

 

Where is the rust located and how bad is it? Do you have any pics? "Surface" rust doesn't sound that bad. It might also help to know where your Jeep is from.

 

 

It is in many spots but it is very light. It hasnt eaten through anything. I bought the Jeep and want to clean up the underbody.

 

If there's something you'd like to add lets hear it.

 

 

Pictures usually help. Depending on what and how much I am leaning towards POR 15 or Fluid Film. I know the Fluid Film idea sound weird. The first year I Fluid Filmed under my Jeep I noticed that my steering knuckles and the diff tubes were kind of a rust red. Thought to myself when I wash off the Fluid Film in the spring I will POR 15 a little there. Been playing with it for a bit at that time and for what I have tried to use it for am very happy with it. Anyway April comes and I power wash under the Jeep. Well it is almost has if the Fluid Film had "conditioned" the metal. What was a rust red was not a mud brown. I never did POR 15 there. I do Fluid Film every year for the winter. I live in New England and they use that crap on the roads.

 

Over time, fluid film helps the oxidized material dissolve and lift away from the metal and get brushed/washed off (probably any oil would do this to some extent), leaving more of just the metal and fluid film. You could also just brush/grind the rust off and treat with naval jelly (or whatever your favorite disolver is) and then treat with fluid film, and it will stay looking much better than how it originally was.

 

Well not starting anything but with proper prep and use in its intended purpose it really works great have used it for many years. If used were it will be in sunlight then will need a cover coat as it doesn't like sunlight.

 

That's been my experience too. I've used it for years with good results.

 

Its like antiseize, but harder to get off. Wear old clothes, and keep the dog in the house. Thats my suggestion.

 

What about using rino liner on the frame under belly etc.?

 

you have to remove or repair the rust first bedliner is not a cure or stop for rust