Greetings, Acquired 300 CRD T Brilliant black, black tints, 58 reg with only 20K miles, I wanted one since they came out, I'm over the moon with it. The dealer Kings of Cheltenham & Gloucester treated me as if I was buying 3 new ones, best dealer experience I've ever received,i'll add another post on that. The only mod I made was add an OEM Anthracite grille, when looking underneath we discovered that its just painted ?...no underseal? I plan on keeping it long term, even when retired from business use so should I underseal it and even waxoyl other panels ? I'd hate for it to rust away.