Hot Rods Staving off surface rust? How besides painting...?

After a very gracious man in Rocky Mtn. House, Alberta GAVE me a part I had been looking for for over 30 years (he refused any kind of payment!!!) I started looking over the project more carefully.


I found two stripped fenders got some surface rust. Went over with a PA/ Eastwood surface prep tool and 60 grit.

Now I hope to epxoy prime but not right away. Should I coar with Gibbs, Ospho, or vinegar? I don't want a big chore cleaning them up when it's time to paint...

real world experiences....?

 

Get them phosphate dipped. Had some model A panels soda blasted which removes paint but not rust. They then phosphate dipped them to a nice satin gey to convert the rust.

 

Gibbs has worked well for me.

 

POR-15 Metal Prep. Dissolves surface rust and leaves a zinc coating. Shake it, spray it on wet, let it work a minute and wipe dry with a paper towel. I have maintained bare metal setting for more than 10 years with this stuff.

https://por15.com/products/metal-prep