Which engine oil should be used for oil change?

I'm fairly certain that Mercedes in 2000 were already all using Mobile 1, the top-of-the-line full synthetic. You'll want to make sure that you are using the right oil weight. Do you have a copy of the owner's manual? Also, Mercedes engines take huge amounts of oil--the oil changes are expensive.

Mobil 1 0W-40 European car formula Full Synthetic. $6.50 a quart at Wal-mart It is now available in 5 qt jug at Walmart for about $25