After years of owning BMW's coupes and saloons I've finally made the break and bought a Mercedes; a black 350 SLK. So far it's great - but how do I keep the textured matt black dash clean ? After only 2 weeks of owning it I have white spots appearing. I've seen plenty of references to these on the web, but I can't find any information on the best way to keep the inside of the car clean. Can somone advise me please ? Is it as simple as frequent use of a clean microfibre cloth and water or is there a better way ? Thanks in advance for your help, and sorry if this is an old old question.