Manual - Chapter 4 - Cooling

Specifications

Coolant
Type Distilled water with antifreeze
Recommended antifreeze BMW-approved good quality long life antifreeze, glycol-based, with corrosion inhibitor, free from nitrides eg:
Fricotin
ICI 007 or 012 antifreeze
Glycoshell P300
Hoechst Genantin VP 1719
BASF Glysantin G41/23
Mixture ratio:
Standard
(down to -28°C / -18°F) 60% water : 40% antifreeze
Alternative
(down to -36°C / -33°F) 50% water : 50 % antifreeze
Capacity overall:
75 models Approx 3,00 liter (5.3 Imp pint, 3.2 US qt)
100 models Approx 3,25 liter (5.7 Imp pint, 3.4 US qt)
Capacity of individual components - approximate:
Radiator - 75 models 2,50 liter (4.4 Imp pint, 3.2 US qt)
Radiator - 100 models 2,80 liter (4.9 Imp pint, 3.0 US qt)
Expansion tank 0,40 liter (0.7 Imp pint, 0.4 US qt)
Radiator
Filler cap valve opens at 1,00 - 1,15 bar (14.5 - 16.7 psi) - approximately equal to temperature of 120°C (248°F)
Expansion tank
Filler cap valve opens at -0,1 bar (-1.5 psi)
Thermostat
Opens at 85°C (185°F)
Fully open at 92°C (198°F)
Coolant overheat warning lamp
Lights at 111°C (232°F)
Torque wrench settings 75 models 100 models
Component Nm lbf ft Nm lbf ft
Coolant drain plug 9 ± 1 6.5 ± 0.5 8,9 6.5
Water pump impeller:
Early models - 8 mm nut 21 ± 2 15.5 ± 1.5 21 15.5
Late models - 8 mm bolt 33 ± 4 24 ± 3 33 ± 4 24 ± 3
Oil/water pump assembly mounting screws 7 ± 1 5.5 ± 0.5 N/Av N/Av
Oil/water pump cover screws 7 ± 1 5.5 ± 0.5 N/Av N/Av
Coolant pipe stub mounting screws 7 ± 1 5.5 ± 0.5 N/Av N/Av
Radiator mounting bolt or nut 8 ± 1 6.5 ± 0.5 N/Av N/Av

 

Next Section: General description

  1. Filler cap
  2. Expansion tank
  3. Radiator
  4. Thermostat
  5. Sensor overheat warning lamp
  6. Oil/Water pump