What's the 2015 BMW 320i oil type?

It's recommended to use Original BMW Engine Oil in the 2015 BMW 320i for optimal fuel efficiency and year-round protection. Choose a conventional or synthetic oil with one of the following viscosity grades: SAE 0W-40, SAE 0W-30, SAE 5W-40 and SAE 5W-30. Always use an oil that meets BMW Longlife-01 or BMW Longlife-01 FE oil rating standards in the gasoline engines and BMW Longlife-04 in the diesel engines. If these types of oil arent available, an alternative may be used if it has the API SM or superior oil rating for gas engines and API CJ-4 for diesel engines. The 320i has an oil capacity of 6.1 quarts, and the level should be checked at least once per week. The oil & filter should be changed every 3,000-5,000 miles if using conventional oil and 7,500 - 10,000 miles when using synthetic.