BMW 7 series, E32 (USA)
Differential fluid capacity & service interval
BMW 7 series, E32 (USA) uses differential fluid with a capacity of 1,9 liters. Service intervals are flexible based on the on board maintenance system. The data covers 8 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
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Additional Notes
- The BMW 7 Series E32 (USA) rear differential fluid capacity is 1.9 liters across all listed variants, covering the 735i, 735iL, 740i, 740iL, and 750iL.
- The 1.9-liter figure represents a service fill capacity, meaning the amount of fluid required when servicing the differential under normal drain-and-refill conditions rather than a full overhaul with complete disassembly.
- All eight configurations in the specifications share a flexible service interval governed by the on-board maintenance system, which adjusts the service schedule based on actual operating conditions rather than a fixed mileage or time interval.
- The 740i and 740iL, both covering 1992-1994, each appear in two configurations: a standard rear differential and a rear differential with a differential lock. Both configurations carry the same 1.9-liter capacity.
- The 750iL, spanning 1987-1994, similarly lists both a standard rear differential and a differential lock variant, each with a 1.9-liter capacity and a flexible on-board maintenance system interval.
- The 735i and 735iL, covering 1987-1992, are listed only in standard rear differential configurations without a differential lock variant, each holding 1.9 liters.
- The consistent 1.9-liter capacity across the six-cylinder 735i and 735iL and the eight-cylinder 740i and 740iL indicates that engine displacement differences between those variants did not result in a change to the rear differential housing size or fluid volume requirement.