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      01-11-2013, 12:01 AM   #6
CanAutM3
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Drives: 2015 M4 DCT
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2015 BMW M4  [4.10]
2006 Audi S4  [0.00]
I also followed the break-in recommendations.

I never needed to add oil between changes (closing on 45k miles and the ///M is seeing plenty of track time).

If one elects of not following the break-in interval, my understanding is that the break-in oil should be changed before the engine is operated beyond the specified break-in limitations. The different composition of the break-in oil and any contaminants present (manufacturing residue) may have a negative impact on the engine.