Mobil 1, 10W30 would be an excellent choice. However, if you're looking for high mileage out of your new Benz, don't feel that because you're using Mobil One that you can stretch your oil change intervals. Regardless of the oil you use, grit and acids accumulate in it, and the only way to get them out is to drain the oil. Enjoy your trip and your new Benz.
Change oil hot, and change oil often,
'84 Euro 240D, 516K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in