BMW 1500, 1600, 1800, 2000, E8 (EU)

Automatic transmission fluid capacity & service interval

BMW 1500, 1600, 1800, 2000, E8 (EU) models require automatic transmission fluid with a capacity range of 1.5 to 5 liters. Service intervals include checking at 12000 km and changing at 18000 km or 36000 km. The data covers 4 configurations.

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

TypeSpecifications
2000 (1966-1971)
  • Use: Normal
  • Capacity 1,5 liter (Refill)
  • Change 36000 km
  • Code: ZF 3HP-12/B 3/1
2000 C (1965-1970)
  • Use: Normal
  • Capacity 5 liter
  • Capacity 1,5 liter (Refill)
  • Check 12000 km
  • Change 18000 km
  • Code: ZF 3HP-12/B 3/1
2000 CS (1965-1969)
  • Use: Normal
  • Capacity 5 liter
  • Capacity 1,5 liter (Refill)
  • Check 12000 km
  • Change 18000 km
  • Code: ZF 3HP-12/B 3/1
1800 (1963-1968)
  • Use: Normal
  • Capacity 2 liter (Refill)
  • Capacity 5 liter (Total)
  • Code: 3/1

Additional Notes

  • The BMW 1800 (1963-1968) automatic transmission carries a total fluid capacity of 5 liters, while the refill figure stands at 2 liters. The gap between total and refill capacity reflects fluid retained in the torque converter and valve body during a standard service drain, meaning a routine service fill replaces only a portion of the system's full volume.
  • The 2000 C (1965-1970) and 2000 CS (1965-1969) share identical automatic transmission specifications, each listing a 5-liter total capacity alongside a 1.5-liter refill figure. As with the 1800, the difference between total and refill values points to fluid that remains trapped in the converter assembly when the pan is dropped without a full overhaul.
  • The 2000 (1966-1971) specifies only a 1.5-liter refill capacity with no separate total capacity figure, which aligns with a service-fill-only specification rather than a full overhaul measurement.
  • The 2000 C and 2000 CS both carry a fluid check interval of 12,000 km under normal use conditions, paired with a change interval of 18,000 km. The shorter check interval relative to the change interval reflects a two-stage maintenance approach where fluid condition is monitored before a full replacement is due.
  • The 2000 (1966-1971) specifies a change interval of 36,000 km under normal use conditions, which is double the 18,000 km change interval listed for the 2000 C and 2000 CS. Both intervals apply to normal use, making the difference a model-specific variation rather than a condition-based one.
  • No fluid check interval is listed for the 2000 (1966-1971), in contrast to the 12,000 km check interval present in the 2000 C and 2000 CS specifications. The 2000 row carries only a change interval, indicating a simpler single-event service schedule for that variant.

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