What's the 2000 mercedes benz ml320 oil type?

The oil type used on the 2000 Mercedes Benz ML320 iS5W-40. Some of the products that You can use are Castrol Edge Synthetic Motor Oil 5W-40 or Valvoline SynPower Synthetic Motor Oil 5W-40. The main function of engine oil on Your vehicle is to keep the motor protected and lubricated. It also cleans, prevents overheating, and reduces friction. You want to make sure You're takeng good care of Your oil so that the motor and its components last a long time. Some ways to do this are to replace the oil before it starts turning dark and check the level once a week.