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      03-30-2011, 03:31 AM   #41
Whoopsy
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Drives: 11 B7, 11 X6M, 07 997TT, 08 X5
Join Date: Jun 2007
Location: Vancouver,BC

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This is the default BMW oil info sheet.

Notice the first section it calls for 5w-30, this oil is the default oil unless otherwise noted.

It does have a special M section, but the M section specifically only states 4 engines, S54, S62, S65, S85 that needed the 10w-60.

This means the S63 is not part of the exception.

Of note, there is a Alpina B7 section that calls for the standard 5w-30 oil, the B7 engine is derived from the N63 engine, just like the S63 engine in the X5/6M. They all uses the same N63 engine block, there are no extra oil passages on the S63 for extra oil flow, which means the heavier 10w-60 oil will no provide enough flow at the top end of the rev range.

This sheet is also the same info the BMW rep pull up when you called in. There is no special section for S63, as it is suppose to be using the dedault oil, but since it's installed in a X5/6M, with the M being the keyword he heard, he defaults back to the M section.

Btw, when talking about 'sophisticated' engine oil, BMW factory oil are API SM rated, a higher grade than even the TWS, which is SJ, or it's current form, Castrol Formula RS 10w-60, a SL grade.


In any case, if you want to continue using 10w-60, no one is stopping you. At least when your engine blow up because of insufficient oil flow, you can claim warranty on it as you DID used 'BMW Approved Oil', as told by a BMW rep. You did record that phone call as future evidence did you?
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File Type: pdf BMWCurrentListing_of_SyntheticOils.pdf (13.1 KB, 1033 views)
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