cj10jeeper said:I would stop before doing anything and work out what it is. Are the marks fine chips or something on the surface?
Just claying more and more or polishing is a sure way to end up quickly needing a respray..
If in doubt drop into a spray shop and ask if this is something they can polish out or does it need respraying. They will gladly tell you and quote to do it.
warmasice said:Looks like it's had a repair at some point. A bodyshop might try to wet sand it then mop it. However, it's hard to make out what's really going on.