Quote:
Originally Posted by happos2
For people with Warranties, I would be careful if you plan on running different oil. While it may prolong the life of your bearings, you have voided your warranty since the oil is not approved (or so that is my understanding). Therefore, if you are under warranty and your engine goes ca-put, hopefully BMW will not take an oil sample and determine that you were running the wrong oil and voild your warranty.
This is my understanding and please correct me if I am wrong (I have been wrong before!!)
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This is 100% true! I am quite sure the first thing they would do is sample the oil! This is mostly aimed at people who are out of warranty, hence changing bearings on their own dime. My self, I am almost out of warranty so I will be changing to 0W40 next oil change.