BMW 3 series, E30 (EU)

Transfer case fluid capacity & service interval

BMW 3 series, E30 (EU) requires 0,5 liter of transfer case fluid. Service intervals follow a flexible on board maintenance system. The data covers 2 configurations.

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

TypeSpecifications
325iX (1988-1991)
  • Use: Flexible (on board maintenance system)
  • Capacity 0,5 liter
325iX (1986-1988)
  • Use: Flexible (on board maintenance system)
  • Capacity 0,5 liter

Additional Notes

  • The BMW 3 Series E30 (EU) 325iX transfer case holds 0.5 liter of fluid, a notably small capacity consistent with the compact transfer box design used in this all-wheel-drive variant.
  • Both the 1986-1988 and 1988-1991 325iX configurations share an identical 0.5 liter transfer case capacity, indicating no mechanical change to the transfer box volume across the production span covered by these specifications.
  • The service interval for the 325iX transfer case fluid is listed as flexible under the on-board maintenance system, meaning the vehicle's own monitoring system determines when a fluid change is due rather than a fixed mileage or time-based schedule.

Other Systems