Well LL-01 means for car after 2001. The previous one is LL-98. Non of the Royal Purplse is BMW qualified. ( which means they go through BMW's own specs) on top of APIs.
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Originally Posted by Vancouver_M5
For newer cars it might be different, but in the case of the older e39, many people swear by it. I just started using it, i dont feel like my car has a thousand extra horses but so far it works fine.
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