Quick Summary
Looking for the correct oil type for your 1985 BMW 635CSi? According to factory specs, the 3.5L 6 -cyl Engine Code M30 B34 4 requires 10W-30 viscosity oil. Using the right oil capacity of 6.1 quarts ensures engine longevity and fuel efficiency.
๐ข๏ธ 3.5L 6 -cyl Engine Code M30 B34 4
Verified Data
Capacity
6.1 quart
Viscosity
10W-30
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Common Trouble Codes for 1985 BMW 635CSi
Get vehicle-specific repair guides for these codes