Adding coolant
WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.
Use only recommended coolant. See RADIATOR -- OPERATING FLUIDS .
Observe mixture ratio.
Observe FILLING CAPACITIES.
Fill and vent COOLING SYSTEM.
Observe bleeding instructions without fail.
Assemble engine.
Visual inspection of cooling system for tightness.