My MB dealers have suggested that if they replace the engine oil in my S500 Model june 2002 ( 9000 miles) with a totally synthetic oil, ( present oil is Semisynthetic) the engine will run quieter.
Could someone please comment whether they think that this is a valid thing to do or whether the dealers are pulling wool over my eyes or ears!
Shall be grateful.

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pathan

Synthetic was supposed to be there in the first place!
Mods, can we move this to Tech Help, so it gets the attention it deserves?

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1984 380SL-driving and service privileges.