Yup, a great name. With luck, you will not see much soot with your 300SDL. Even after 3 weeks between car washs, I don't notice any soot deposits on the bumper. I know that there is soot there to some degree. Just don't see it in regular driving. However, if I give my 603 an Italian Tune up, then I see smoke(soot)! Good luck

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Paul 1987 300 SDL; 2000 ML; '69 MGB; '68 VW Fastback