I am the proud owner of a 1990 300E (214,000). I will refer to her as sadie. Sadie has been one of my best investments ..especially since I bought her from a Mercedes-Benz service tech. However she as of late has been trying to get my attention by clicking her valve(s) at me. I am running synthetic oil 20W/50 and also 1 quart Marvel mystery oil ! Sadie doesnt burn any that I am aware of !! Help please, how can I make her quieten down?
thanks in advance,
Brandon