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(Topping up the motor oil)

NOTE: RISK OF DAMAGE 
Engine damage caused by excessively filling the engine with motor oil. 
Filling an excessive quantity of motor oil may cause engine damage. 
  • Observe the exact motor oil filling capacity.
  • Allow engine oil to drip off when draining.
NOTE: RISK OF DAMAGE 
Damage on the gasoline particulate filter. 
Vehicles that are equipped with a gasoline particulate filter must be operated with low-ash engine oil. 
  • Only use engine oils approved by BMW for the respective engine. See "Fluid Capacities" tab for the selected vehicle.
NOTE: TECHNICAL INFORMATION 
Observe the sign in the engine compartment! Only fill with approved engine oil of the correct (Society of Automotive Engineers) viscosity grade.
(TECHNICAL DATA SPECIFICATION)

Engine oil B46B20O1/B48B20O1 
  Filling capacity, motor oil change with oil filter element  5.75 l

Installing the oil filler cap 

G16620727Courtesy of BMW OF NORTH AMERICA, INC.