I got some white line in the road paint on my car as it was flung up by my tire.

3M is a great product and should be in every garage. It may not work on paint that is fully dried,but it won't do any harm. It removes wax,so rewax after use.

 

As you said, absolute magic and useful in so many situations. No garage is complete without at least one can. But it's highly unlikely to be effective on road striping paint, especially after all this time.

 

As a chemist, the solvent needed to dissolve the paint has to have the same polarity. Having said that, you might try calling your county highway department and ask them what they use to clean their line painting equipment. It's worth a try and might save you from the trial and error above. Last resort is always a good body shop that can sand it off and repaint.

 

OP did you try WD-40 like I suggested? It does work, but takes some work to rub out even if the road paint is old.

 

+1

 

I had the same problem on my Yukon Denali. It was either road paint or liquid nails. I tried everything. Nothing touched it. I found Goof Off for superglue removed some. The only way I could remove it was to use a razor blade. It doesn't seem to mar the clear coat and what is left cleans up with the solvent.