My wifes girlfriend is visiting from out of state and when asked she didn't know what weight oil or brand was in her MB. Its her car and has very low miles (107K), clean inside and in the motor compartment. Mainly I'm just curious about the oil since I got involved in having new tires put on. I was looking at her tires and one rear was worn on the inside down to the wires! Both fronts were scrubbed on the outside. Obviously it needs an alignment, something her dealer needs to do. Anyway, I'm having a set of Conti's DWS put on tomorrow as I felt it was too dangerous for her to drive 400 miles home on the Michelins. I chose the Conti's over Kumho's as there wasn't a whole lot available in the time frame that she will be here.