BMW 3.0 CS, E9 (USA)

Differential fluid capacity & service interval

BMW 3.0 CS, E9 (USA) differential fluid capacity is 1,6 liters. Service intervals include normal use. Data covers 2 configurations.

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

TypeSpecifications
  • 3.0 CS (1971-1975)
  • Rear
  • Use: Normal
  • Capacity 1,6 liter
  • 3.0 CS (1971-1975)
  • Rear, with differential lock
  • Use: Normal
  • Capacity 1,6 liter

Additional Notes

  • The BMW 3.0 CS, E9 (USA) rear differential carries a fluid capacity of 1.6 liters, which is a typical service fill volume for a rear differential of this era and size.
  • The standard rear differential and the rear differential equipped with a differential lock share an identical fluid capacity of 1.6 liters, meaning the locking mechanism does not alter the total fluid volume required.
  • Both configurations apply the 1.6-liter capacity under normal use conditions, as opposed to severe-duty or first-change-only designations.
  • The 1.6-liter figure represents a service fill capacity, reflecting the amount of fluid needed during a routine drain-and-refill procedure rather than a complete overhaul or dry-fill scenario.
  • The capacity specification remains consistent across the full 1971-1975 model year span covered, with no variation recorded between earlier and later production years within that range.

Other Systems