The first number, preceded by a 'W', indicates the cold-temperature viscosity; '0W' flows better in freezing conditions than '5W', ensuring instant lubrication on cold starts. Conversely, LL-04 is specifically designed for vehicles equipped with a Diesel Particulate Filter (DPF), requiring lower SAPS (Sulphated Ash, Phosphorus, Sulphur) content to prevent clogging and ensure optimal emissions system function.
High-Temperature Protection for BMW Engines
LL-01 is the standard long-life oil suitable for most naturally aspirated and turbocharged engines. 0W-40 or 5W-40: Recommended for high-performance engines or track use, offering superior protection under heat.
Viscosity: The Numerical Code Decoding the numbers on the oil cap, such as 5W-30 or 0W-40, is essential for bmw what oil selection. However, the most accurate method is to monitor the oil life indicator in the iDrive system.
High-Temperature Protection for BMW Engines
The second number represents high-temperature viscosity, where a '40' offers a thicker film for high-stress driving compared to a '30', which improves fuel economy. This results in consistent viscosity over a longer period, cleaner engine internons, and the ability to handle the aggressive power delivery that BMW engineers are famous for.
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