Fluid · Engine Oil
Engine Oil
for 1985-1987 BMW 635CSi 3.4L I6 · RWD
Fluid Type
10W-40 or 15W-40 conventional/synthetic blend
Spec: API SF/SG or higher
Capacity
6qt
5.68 L
Drain & Refill
6 qt
5.68 L
Change Interval
5,000 mi
8,045 km
Notes
M30B34 engine with filter. Modern oils (API SN/SP) acceptable if viscosity maintained.
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