Originally Posted by Z K
I use ONR occasionally. It really depends how dirty the car is. If your car is daily driven and covered in dirt, mud and/or bugs, you can not ONR. Even with ONR pre-soak, it will mar the surface.
True, it does depend on many factors. I have found bugs are one thing that won't phase ONR. If they aren't left to sit for too long, a MF towel dipped in ONR solution and kept in place over the bug remains for a minute will soften them up so that you don't need a dedicated tar/bug remover.