Hey all.
Im just about to pick up an original front quarter panel with almost no rust just some surface rust on the inside.
Mine is poo'd in the usual place at the bottom.
My question is how i should remove the surface rust from the inside without removing to much metal and then how to preserve this rarity for future generations.
I have a really sweet circular wire brush that goes on the end on my angle grinder that does a beaut of a job for almost everything but im wondering will it take off to much??

Also what do people think of that fish oil spray stuff in the can for rust prevention? Or that rust killer that turns rust into black primer? what can i use CHEAPLY to preserve.
Any help is much appreciated.

P.s. i hate those taiwaneese pieces of non-fitting crap

You can buy a nylon scourer brush for a drill that are called graffiti removers. They are awesome for gentle removal of light rust. You could also try using a flap disk for your grinder. They are basically about 60 grit sandpaper for the grinder. A bit more heavy duty, though.

And the rust converter stuff, which i think is basicaly sulphuric acid is great. It stops rust in its tracks, but you are still better to remove all the rust first if you can.

The fish oil stuff worked for me in my old pootrol, but it was messy and needs regular aplication on external panels to maintain protection. Its a good cheap method of reducing rust damage, but its not very permanent.

If this panel is going to sit in the shed, then soaking it in fish oil wont do it any harm and you can just brush it on.

cheap, well sulphuric aicd for the rust
and used engine oil to protect the panel for storgae. Not pretty, but cheap was the critera.
If you actually want to put it on the car, then the fish oil is the next best thing, or CRC. that works alright.

If its thick scaly rust, use the wire brush. The brush wont hurt the metal unless you hold it to long in one spot.
If its surface rust go the hardware store paint section and get any old rust converter/deoxidine and wipe it on and then scrub it off with steelwool and plenty of water.
Then seal it with paint. If its under the guard, seal it with primer, stoneguard and then paint.