Picked up a GTI that had black rubber door protectors on the lips of the doors that seemed to have been stuck down with some kind of adhesive or had some kind of paint protection strip underneath it (if it was it didn't work very well as the rubber strips have worn through the paintwork). I've removed the rubber bumpers and I am left with this underneath, like a perished layer of plasticy sticky residue.
Was recommended tar remover to try and get this stuff off and tried it earlier with Autoglym tar remover for about 10-15 minutes and while it did get some of the stuff off, it removed very little of the overall amount. Is there any other method or product I can use that is safe on paint work?
Also is there anything I can do to improve the scuffed line down the paintwork where the strip had been rubbing (the grey line to the left of the white sticky residue) perhaps some kind of cutting polish? Failing being able to improve the damage I was just gonna put the rubber bumpers back on but was hoping to remove all the residue and place a strip of 3M protector underneath to stop the rubber bumpers wearing the paint work down anymore.
Any advice appreciated. Cheers.