Strange
 

The other day, I was cleaning out my tail light socket with WD-40 to hopefully cure a problem. The problem was not cured, but however, some WD-40 got on my bumper. I did not notice it until the next day though, but the WD-40 appeared to make part of my rear bumper look newer and darker. It had a bumper sticker that had been on for 8 years on the back, but I took it off, and that part was still dark, and the WD-40 affected part is as dark as the previously covered part is now. Before I go on and put WD-40 on the rest of it, has anyone ever tried using WD-40 to "rejuvinate" faded early W126 bumpers and side panels? And if so, were the long term results good, or bad?
-Joe

WD-40 is about 80% kerosene (a solvent) so perhaps it's stripping off some outer layers of paint.

Do a search for <peanut butter>. No, I'm not kidding ;) The oil rejuvenates the rubber/plastic a bit. That's what the WD-40 has done (temporarily I'm afraid).