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Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2596 (Cooling System - Repair - N52 - E90) >> 1700 Coolant, Checking Cooling System >> 17 00 039 Venting cooling system and checking for water leaks (N52/N52K/N51/N53) >> Adding coolant

Adding coolant

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Open vent screw (1).

Slowly fill coolant expansion tank up to lower edge of filler neck with RECOMMENDED COOLANT .

MIXTURE RATIO .

Close vent screw (1) until bubble-free coolant emerges.

Have a cleaning cloth ready and mop up emerging coolant.

Close cap on expansion tank.

Fig 1: Identifying Vent Screw
G04751515Courtesy of BMW OF NORTH AMERICA, INC.