I appreciate that there is a great deal of discussion on these forum about variable servicing, but I remain confused, probably because so much as been said about it.I have just had a service B done on my w203. Following guidance from some of the threads I specificaly asked the stealer to ensure that Assyst was set to fully variable servicing, and that they used the higher spec fully synthetic oil. They have used mobil 1, and they assure me that the system is set to fully variable - even says so on the invoice. However, it seems to be counting down from 10k, which to a layman like me suggests something is not right. Is thereanyway I can check what they have programnmed into assyst, or any other evidence that I can use so that I can take up my argument with them to see if they ahve done what they said they have done - and charged me for ! ? Grateful for anyones help!