2005 e320 cdi dirty engine oil
with 110k. I'm the second owner as of 98k. Changed the oil at 104k (it was changed at 98k before by seller.). The oil was and is black. I've had diesel pickup trucks but never let the oil get that dirty. I'm thinking of changing it 2x in a row just to clean up the crankcase and then again in a few thousand. Is this a good idea or not necessary?
|