I have used the citrus goof off with some reasonable success. It's supposed to be OK on painted surfaces. Looks like this.
https://www.amazon.com/Goof-Off-FG79...NsaWNrPXRydWU=
I've also heard of people using WD-40 but I have never personally tried it on auto paint. It works great for removing the black streaks on the side of our slides though.