I was cleaning under the car today and I've discovered what appears to be sprayed on 'gunk'. It's a yellow colour and has a waxy consistency but has dried on some parts and comes off in a powdery form. As it appears on the under side of most components it appears to have been sprayed on from underneath. My rocker cover/inlet manifold has that gold coloured discolouring which I've heard was sprayed onto export stuff (God knows why). Could this be the same stuff? I want to get rid of it but if it is there to protect parts I'll leave it on. Any help would be great. sorry no pics.