What's the 2008 mercedes r350 oil type?

The recommended oil type on the 2008 Mercedes Benz R350 is 0W-30 and 0W-40. If You live in an area where the temperature is above -13F, then You would need to use 5W-30, 5W-40, or 5W-50. If it is above -4F, then You can use 10W-30, 10W-40, 10W-50, or 10W-60. Areas above 5F will need to use 15W-30, 15W-40, or 15W-50. Lastly, areas above 23F should use 20W-40 or 20W-50. Just in case You also needed to know, the oil capacity on Your vehicle iS8.5 US quarts. Remember to change Your oil according to Your owner's manual set interval times and to check and top off the oil level at least once a week.