Question: what is the difference between bmw ll01 and ll04?
Answer: BMW longlife 01 is BMW LL01. The difference between LL01 and LL04 is that LL04 is formulated for improved exhaust cleanliness. It is a must have for the new BMW clean dielels with particulate filters. There is also some additional additives in it to help keep engine internals even cleaner than LL01 does.