Hi every body,I have a 2008 s-class w221 with 150000 mils. Recently I have removed M.A.F. sensors and cleaned, replaced air filters,replaced fuel filter, I did this to stop juddering at 30/40 mph also juddering when pulling up hill------what else can I do?. Also changed oil seals at turbo (both Orange ones)and still have oil leak, is there a good way to stop this oil leak and how much oil should come through pipe to turbo? I hope some one can help as there is not much about s_class on forums, meny thanks.