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#8: 11-19-2012, 05:26 AM
JoeFromPA's Avatar
Title: Burning Monkey
Location: West Chester, PA
Car: 2015 m3, 2008 BMW 535xit
Posts: 3,853
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I ran severe gear 75w110 for quite awhile with absolutely great results and very similar to what you experienced: a great shifting feel and less whine while in gear (which is where I spend most of my time!).

I did switch to extra-S to try it out and it was almost identical, with very light improvement at very low temps.

Unless there is something wrong, leave it in for 15-30k. Get some life out of it.