Can I save an old IBM computer case from rust?

I have a beat up 1984 IBM PC AT Model 5170 has some unsightly surface rust on its case. A friend recommended I use automotive wheel cleaner as a way to remove the surface rust without affecting the original paint. (As I do not have the resources or time to completely sand and repaint the computer case.) Let's experiment and give this a try to see if it works!

Here is what I used:

Iron Free Wheel Cleaner: https://www.amazon.com/Nanoskin-NA-IFE16-Paint-Decontamination-Remover/dp/B016K0902C/

Paint Protect: https://www.amazon.com/Meguiars-G36516-Paint-Protectant-oz/dp/B00P9OEZR6 ... https://www.youtube.com/watch?v=PcOJzIZpPyY