2006 S500, 2003 ML350, 1996 C280 (Previously 2002 CLK320, 1995 C220, 1980 300SD TurboDiesel)
have any of you ever flushed your engine yourselves? I'm kind of sick of all the black oil aka dirt in the oil I guess. Is it highly beneficial to have those deposits removed etc? Is it a difficult/expensive process.... cheers!