Quote:
Originally Posted by plm
For the M6 BMW states that you can top up with a quart of LL-01, but you can't fill with it and have to use LL-01 FE. It's clear as day in the manual.
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LL-01 and LL-01 FE are substituable. FE is literally there to meet fuel efficiency guidelines. That is why the owners manual says you "have to use xxx", otherwise they will be subject to be tested using the other oil which may make them restate their fuel efficiency numbers. Then they will have a BIG problem on their hands and may be subject to fines, like Hyundai/Kia:
https://www.npr.org/sections/thetwo-...ileage-figures
What year M6 do you have?