BMW 3.0 CS, E9 (USA)

Power steering fluid capacity & service interval

BMW 3.0 CS, E9 (USA) models utilize power steering fluid with a capacity of 1,2 liters. The data covers 1 configuration.

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

TypeSpecifications
  • 3.0 CS (1971-1975)
  • Separate system (ATF cap)
  • Use: Normal
  • Capacity 1,2 liter

Additional Notes

  • The BMW 3.0 CS, E9 (USA) power steering system holds 1.2 liters of fluid, which reflects a service fill capacity for a separate, self-contained hydraulic circuit rather than a shared or integrated drivetrain reservoir.
  • The 1.2-liter figure applies under normal use conditions, meaning standard operating environments without the added stress of severe-duty cycles such as frequent towing or extreme temperature exposure.
  • The reservoir on the 3.0 CS is capped with an ATF-type fitting, indicating the system was designed to accept automatic transmission fluid rather than a dedicated power steering fluid formulation, a common engineering approach in European vehicles of the early 1970s.

Other Systems