I just ran across a post on a detail forum I use.
The guy was using a clay bar and could not get some tar off.

He saw his bottle of Simple Green, and had an idea.
Here is the post.

I have stubborn pitch deposits on top of my roof that I just leave because the clay bar won't get them off.
I'm going to try his trick next time.

I would not use it on wheels though, as you can see by reading those posts.

 

FWIW, since I started using Zaino, I've NEVER had to use anything else to remove tar, eggs, bugs or anything else. Sometimes a little extra elbow grease, but nothing else. It all comes off pretty easily. That stuff is SLICK!

 

I use brake clean on tar and pitch.

 

Yeah. I always have a hard time getting those stubborn eggs off!!??


Warren