Quote:
Originally Posted by MB21
Who told you that you are in break in period?
Real in is something from the past today's engines don it need break in anymore unless you buy something really outdated.
The tolerances on bore and piston form and size are much higher and the measurement of the components is more accurate so parts fit correctly from a day one.
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I don't think this is entirely accurate. All or most of the BMW M cars have break-in periods of 1,200 miles. I agree it matters a lot less now than in the past.
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Sold: 2020 X7 M50 White Mineral with Ivory & Blue, 2017 X6M Long Beach Blue with Mugello Red, 2014 X6M Monte Carlo Blue with Mugello Red, 2011 X6 5.0 Black on Black, 2008 E350 4Matic Silver, 2006 Infiniti M45 Diamond Graphite