BMW 6 series, E63 / E64 (USA)

Coolant capacity & service interval

BMW 6 series, E63 / E64 (USA) requires coolant with a capacity of 14,2 liters. The service interval for coolant replacement is 48 months. The data covers 1 configuration.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
645Ci (2003-2005)
  • Use: Normal
  • Capacity 14,2 liter
  • Change 48 months

Additional Notes

  • The BMW 6 Series E63/E64 645Ci carries a coolant capacity of 14.2 liters, which reflects a full cooling system fill volume rather than a partial service top-off.
  • A 48-month change interval is specified for the 645Ci under normal use conditions, meaning the coolant is rated to remain serviceable for four years before a full replacement is due.
  • The 14.2-liter figure applies to the complete cooling system, a volume consistent with the larger displacement V8 engine found in the 645Ci and the associated radiator, reservoir, and circuit capacity.

Other Systems