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Old 12-29-2012, 03:55 PM
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Zeichen311 Zeichen311 is online now
Lost but making good time
Location: Here, there or in transit
Join Date: Mar 2011
Posts: 3,073
Mein Auto: '11 335xi 4dr; '03 330Ci
Originally Posted by bmwexecutive View Post
This has been discussed ad [nauseum].
...and then some. Yet one key fact is repeatedly omitted: The break-in period is for the car, not just the engine.

Everything needs mileage to wear in properly: Bearings, transmission components, differential(s), CV joints, brakes and on and on. It pays dividends in the long run, in the form of smoother performance for a longer lifetime than if you just thrash the car from Day One. Plenty of people argue otherwise, often vehemently, because there is no denying the differences are small. But hop into two cars with 150K-200K on the clock, one of which was properly run-in and another that was not, and run them through a few gears up to redline--you will know immediately which one had a proper break-in.

Follow the break-in procedure in the manual. It doesn't take long and it's worth it.

(BTW, machinery is not alive and does not "heal." Minor excesses during break-in cannot be undone but they do no serious harm, either. Just don't make a habit of it.)
2011 335xi Individual 6MT - Azurite Black Metallic / Oyster & Black / Anthracite Maple + all the good stuff
2003 330Ci Sport 5MT - Black Sapphire Metallic / Natural Brown / Myrtle + the important stuff

   N47 35' 30.13" E11 10' 33.36" - End of can guess what came next. BMW CCA
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