Quote:
Originally Posted by SenorFunkyPants
The interpretation that *every* LL-01 compliant synthetic oil is approved for M engines is wrong. Thats the only point I'm trying make.
To be honest I don't think going from the castrol 10W-60 to the Mobil 1 0W-40 would make the slightest different to the vast majority of engines, but thats me - in the end we are all grown ups and can choose for ourselves.
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I get what you are saying but BMW has no legal right to exclude certain oils out of the LL01 approval. BMW has nothing to do with what is approved and what is not.
If a oil says "Meets or exceeds" then it is not technically approved. Only the manufacturer says it is equal and they could be lying.
If it says "approved" then it has been tested and proven to meet what BMW says is acceptable.
Lets take a 335 just to forget about the M for a minute. BMW has no legal right to say that The 5-30 is good for warranty and the Mobil 0-40 is not. They cannot deny warranty for this.