Rust mort instructions?

[NorCalGal]

Reading the rust mort directions..... it says do not apply to paint or bare metal or it may cause paint adhesion problems. My issue is that I have mostly light rust but there are spots of rust randomly throughout the fender. Do I spray the whole fender the wipe over it with a damp cloth to pick up the excess or what?
When I bought it the guy at the paint store said to spray or brush thinly over the whole panel. I'm having trouble finding the correct information.

[dwcsr]

Originally Posted by NorCalGal

Reading the rust mort directions..... it says do not apply to paint or bare metal or it may cause paint adhesion problems. My issue is that I have mostly light rust but there are spots of rust randomly throughout the fender. Do I spray the whole fender the wipe over it with a damp cloth to pick up the excess or what?
When I bought it the guy at the paint store said to spray or brush thinly over the whole panel. I'm having trouble finding the correct information.

follow this it explains what you need to do
https://www.semproducts.com/manage/h..._rust-mort.pdf

[NorCalGal]

Thank you