2015 BMW 640iOil Type & Capacity

OEM spec from the factory service manual for the 2D Convertible variant.

Quick Answer

Oil Type

BMW High Performance Synthetic Engine Oil, SAE 5W-30

Capacity (w/ Filter)

6.90 QTS.

6.52 L

Variant

2D Convertible

Note: BMW Part No. 07 51 0 017 866.
Source: Factory service manual β€” 2015 BMW 640i 2D Convertible. View full manual section β†’

Frequently Asked Questions

What type of oil does a 2015 BMW 640i take?
The 2015 BMW 640i requires BMW High Performance Synthetic Engine Oil, SAE 5W-30. The exact spec may vary slightly by engine variant β€” this page shows the OEM recommendation for the 2D Convertible configuration.
How much oil does a 2015 BMW 640i need?
The 2015 BMW 640i takes 6.90 QTS. (6.52 L) of engine oil with the filter replaced.
Can I use synthetic oil in my 2015 BMW 640i?
Yes β€” synthetic oil that meets the BMW High Performance Synthetic Engine Oil, SAE 5W-30 specification is acceptable and often preferred for better protection and longer change intervals.
What happens if I use the wrong oil in my 2015 BMW 640i?
Using oil that does not meet the BMW High Performance Synthetic Engine Oil, SAE 5W-30 specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.