I don't know when it was last serviced and i don't know the type of oil they used when it was serviced.
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2001 Mercedes-Benz ML320 Question: what type of engine oil do i use for my ML MERCEDES BENZ 320?
PARTS GUY August 09, 2013, 00:48Master
Don't you have an owners manual?
Answer #2Greg's Orange Auto (14262 Answers) , Orange, CA - (714) 361-9386globalhelper August 09, 2013, 06:16Master
mobil one is the best but pricey the grade should be on your oil fill cap
Answer #3destiny136 September 27, 2014, 19:08Rookie
synthetic oil 5/w about 7-8 quarts mobile only