Scrape loose paint/rust with wire brush, spray or paint on Rust Kutter, allow to dry(24hrs), rinse and allow to dry, and re-paint. Rust must be present for this product to work.
Rust Kutter - Stops and Converts Spots to 32 Fl Oz (Pack of 1)
Zero Rust AR-60GA-CA Red High Solid Zero Rust Primer (Gallon)
Porsche Rust Dissolver - Evapo-Rust (1 gallon) ER012 ER012--CRC
Prestone All Vehicles 10yr/300k mile, Antifreeze+Coolant, Against Rust, 1 Gallon
Evapo-Rust 5 Gallon