Thanks M.B. DOC...Lets see if I have this right...the "D" service is the same as level 4 service which is pretty basic. However the shop may also use level 12, 13 or 14 when servicing the car or the car( FSS) may also indicate things that need done right? So in addition to the basic oil change and filters ( level 12) they will probably do a lot more? In other words I won't know what they are going to do to the car until I take it in. Local MB shop quoted me $600 parts and labor with 4 hours labor. Does that sound about right to you? PS....I'm sure the service schedule attachment you sent makes perfect sense to you but to the novice it's pretty confusing.Having lived in Germany a number of years I learned that nothing is simple if it can be made complex. ....Desert