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      12-18-2009, 11:53 AM   #26
Kyoshi71
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Drives: 2010 M3 Coupe
Join Date: Jul 2006
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Quote:
Originally Posted by turb934 View Post
Break in is more for the transmission & rear differential. Not as much of an issue for the engine
Nonsense. rear differentials do not need a break-in period. Once the gears are miked that's it.