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      10-29-2009, 04:50 PM   #1
MetMan
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Have I done any damage to my engine?

I had an oil change done 1 month and 1600 miles ago at my local BMW independent mechanic. I realized today that he used Mobil 1 10w30 Fully Synthetic Extended Performance (not LL01 rated) oil instead of Mobil 1 0w40 synthetic which is LL01 rated. I'm having my oil changed tomorrow but could I have damaged anything within the past 30 days?

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      10-29-2009, 07:23 PM   #2
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I thought the non-M Z's use 5w30?
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      10-29-2009, 11:39 PM   #3
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but for Mobile 1, 0w-40 is recommended

I used Mobile 1 5w-30 and it burned like crazy and ever since I started using 0w-40, not a drop.
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      10-30-2009, 12:33 AM   #4
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Not unless you drive in freezing cold or extremly high temps. Its really not that big of a difference and normal driving it should be pretty much the same, its the extreme ends where the ratings really come into play.
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      10-30-2009, 04:45 AM   #5
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Thanks for the information, much appreciated!
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