What is the best engine oil for BMW 5 Series?

2 Answers
LaKatherine
08/28/25 8:40am
BMW 5 Series performs best with fully synthetic engine oil. Below is the relevant introduction: Introduction to fully synthetic engine oil: Automotive fully synthetic engine oil is a high-performance motor oil entirely composed of synthetic compounds, offering superior cleaning and oxidation resistance capabilities. Composition of engine oil: Engine oil consists of two parts: base oil and additives. The base oil is the main component of lubricating oil, determining its fundamental properties; additives compensate for and improve deficiencies in base oil performance while imparting new characteristics, making them essential components of lubricating oil.
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McAdalynn
09/10/25 6:45am
Owners of BMW 5 Series know that choosing engine oil requires careful consideration, and I've studied many cases. BMW requires LongLife-certified oils, such as LL-04 or LL-17FE+ standards, and full synthetic is a must. The recommended viscosity is 0W-30 or 5W-30, and 0W-40 can be used for added protection during summer highway driving. Personally, I've tried Mobil 1 and Shell Helix Ultra, both of which perform well during cold starts, especially for turbocharged models that require quick-responding oil. A reminder to everyone: never opt for cheap mineral oils, especially for models meeting China 6B emission standards, as the catalytic converter can easily be damaged by low-quality oil. Additionally, it's best to avoid high-ash oils for the B48 engine, and adhering to an 8,000-kilometer oil change interval is more important than the brand you choose.
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