BMW 5 series, E12 (USA)

Automatic transmission fluid capacity & service interval

BMW 5 series, E12 (USA) automatic transmission fluid capacity ranges from 1,8 to 7,63 liters. Service intervals include checks at 125000 miles or 12 months and changes at 25000 miles or 24 months. The data covers 2 configurations.

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

TypeSpecifications
528i (1978-1981)
  • Use: Normal
  • Capacity 5,7-6,1 liter (Dry fill)
  • Capacity 2 liter (Service fill)
  • Check 125000 miles/ 12 months
  • Change 25000 miles/ 24 months
  • Code: ZF 3HP22 3/1
530i (1975-1978)
  • Use: Normal
  • Capacity 1,8 liter (Service fill)
  • Capacity 7,63 liter (Dry fill including converter)
  • Check 125000 miles/ 12 months
  • Change 25000 miles/ 24 months
  • Code: BW65 3/1

Additional Notes

  • The 528i (1978-1981) carries a dry fill capacity of 5.7-6.1 liters, reflecting the total volume required when filling a fully drained transmission and torque converter from empty.
  • For routine maintenance on the BMW 5 Series E12 (USA) 528i, the service fill capacity drops to 2 liters, representing only the fluid displaced during a standard drain without full disassembly.
  • The 530i (1975-1978) has a dry fill capacity of 7.63 liters, which is notably higher than the 528i range and accounts for the full volume including the converter.
  • Service fill capacity on the 530i is 1.8 liters, slightly lower than the 528i's 2-liter service fill, indicating a modest difference in sump volume between the two engine configurations.
  • Both the 528i and 530i share identical check intervals of 125,000 miles or 12 months under normal use conditions, whichever comes first.
  • The fluid change interval for both configurations is set at 25,000 miles or 24 months under normal use, pairing a mileage threshold with a two-year time limit regardless of which is reached first.

Other Systems