Originally Posted by acr2001

I'm sorry, I just don't understand why people choose to waste their money like this. Please search around, other members have sent their oil for analysis after the full 13k interval and the results showed that they changed it at the right time. In a vehicle calling for a 7k interval then following that makes sense, even with Mobile 1 synthetic. One of the reasons MB's take so much oil is to allow for such a large change interval.