Which is better for BMW, 5W30 or 0W40 engine oil?

1 Answers
DelAngelo
07/30/25 5:19am
BMW engines require 0W40 oil. BMW engines operate at relatively high temperatures, which demands high-temperature stability and protective properties from the oil, necessitating the use of a 40-grade oil. Here are more relevant details: 1. The meaning of engine oil model (specification): SAE (viscosity): The viscosity classification standard specified by the Society of Automotive Engineers. The number before "W" indicates the oil's low-temperature resistance index, while the number after "W-" indicates the oil's high-temperature resistance index. 2. How to find the right oil for your vehicle: Generally, the recommended oil type for your vehicle can be found in the user manual. Choosing the oil type specified in the manual is the optimal choice.
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