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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > How many have had a break in time?



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      02-10-2009, 12:11 AM   #1
MusclezMarinara
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How many have had a break in time?

Hey guys

anyone know if there is a break in time...i heard 1200 miles

i also heard no break in time

what have you fellow bimmer people done
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      02-10-2009, 12:13 AM   #2
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1200 seems to be the standard.. but dude.. try searching first. This has been answered over and over again.
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      02-10-2009, 11:30 AM   #3
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read page 104 of your manual, it outlines break in period.
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      02-10-2009, 11:47 AM   #4
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Quote:
Originally Posted by Bobble View Post
read page 104 of your manual, it outlines break in period.
1200 miles or 2000 km
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      02-10-2009, 12:01 PM   #5
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Controversial subject.

"Follow the manual" vs. "drive it like you stole it".

Most follow the manual.

Do a search and you'll find many threads.
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      02-10-2009, 01:32 PM   #6
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I follow the manual (which is 1200 miles), rather than people on the Internet.
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      02-10-2009, 11:15 PM   #7
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sorry fellas i did a search so many people say no break in others r just plain morons i apologize in the future i will

S E A R C H

thanks !
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      02-10-2009, 11:46 PM   #8
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1200
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      02-11-2009, 12:07 AM   #9
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I follow the manual (which is 1200 miles), rather than people on the Internet.
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      02-11-2009, 01:32 AM   #10
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On a side note, this weekend I will finally complete my 2000 km break-in period. I figured the engineers working at BMW don't write 2000 km break-in period just because they need to practice their German/English. They did it because it is what's best for the car.

Sure it's a painful process but in the time it took me to drive 2000 km with only one highway trip, resisting not to make the Civic with the park bench and coffee can as "spoilers" and "exhaust" look pathetic (ok, I only did it ONCE and I made sure to limit my RPM's are well under 4000), I've really learned to immerse myself in the experience of driving a fine-tuned vehicle as is the BMW 335.

There are other advantages of going for the break-in. Enjoying the car is one of them.




...and I'm going to enjoy next week. VROOM VROOM!!!
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      02-11-2009, 04:01 AM   #11
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Best things to do in my opinion is follow what the manual says.

HOWEVER. If you are even asking this, then I guarantee after the first day or so, you wont be able to resist and you will thrash the balls of it....if only for a few seconds...
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      02-11-2009, 04:22 AM   #12
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this might sound really stupid, i've heard it somewhere but i heard that you can break in you car by driving really like iono how to say it i guess like aggressive as long as you don't keep it at redline something about the aggressiveness smooths out the pipes or something i have no idea. i'll ask my friend tommorow and see what he said
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      02-11-2009, 04:28 AM   #13
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Quote:
Originally Posted by JXYOO View Post
this might sound really stupid, i've heard it somewhere but i heard that you can break in you car by driving really like iono how to say it i guess like aggressive as long as you don't keep it at redline something about the aggressiveness smooths out the pipes or something i have no idea. i'll ask my friend tommorow and see what he said
Huh?
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      02-11-2009, 07:02 AM   #14
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Quote:
Originally Posted by JXYOO View Post
this might sound really stupid, i've heard it somewhere but i heard that you can break in you car by driving really like iono how to say it i guess like aggressive as long as you don't keep it at redline something about the aggressiveness smooths out the pipes or something i have no idea. i'll ask my friend tommorow and see what he said
orlyletmethinkaboutitno.
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      02-11-2009, 07:26 AM   #15
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Quote:
Originally Posted by JXYOO View Post
this might sound really stupid, i've heard it somewhere but i heard that you can break in you car by driving really like iono how to say it i guess like aggressive as long as you don't keep it at redline something about the aggressiveness smooths out the pipes or something i have no idea. i'll ask my friend tommorow and see what he said
I know what you mean. I don't know about smoothing out the pipes but I for sure do not baby my cars(still follow the manual) and each one of them come out as a factory freak.
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      02-11-2009, 03:57 PM   #16
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engine is "broken in" before it arrives to your dealership. break-in period is bullshit.
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      02-11-2009, 04:05 PM   #17
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For the first 1200 miles, I'd break into my car every morning. Now that I'm past 1200, I can just use the key.
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      02-11-2009, 04:20 PM   #18
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just drive normally and you will have no problems,ever!
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      02-11-2009, 04:36 PM   #19
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Quote:
Originally Posted by demosthenes View Post
Controversial subject.

"Follow the manual" vs. "drive it like you stole it".

Most follow the manual.

Do a search and you'll find many threads.
Actually there is better (IMHO) alternative to those 2 techniques. It is the Aggressive break in. You do not beat the car( drive it like you stole it) but you do drive drive it aggressively and take the engine to the redline from day #1. That does not mean drag race like runs to the redline. The engine CAN be taken to the redline(IMHO Should) in a gradual manner followed by coasting back to lower RPMs by engine braking. The engine braking is most important in insuring the piston rings seat. If your waiting 1200miles for you piston rings to seat, you are waiting to long. ESPECIALLY in the N54 engine with cast iron cylinder sleeves. Alusil linings will take longer. Check out Motoman http://www.mototuneusa.com/break_in_secrets.htm. Some will discredit this and put it down. Those of us who have followed this technique know better. But how could we know better than the BMW engineers? Because we are concerned about have the engine break in and pistons seat 100%. BMW engineers are thinking about how much it will cost BMW to replace an engine if someone gets TOO OVERZELOUS during the break in and trashes the engine. If the engine is going to, blow, don't you want to have it happen right away ? BMW doesn't want it to happen while it is under warranty.
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      02-11-2009, 04:40 PM   #20
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Quote:
Originally Posted by nlakind View Post
engine is "broken in" before it arrives to your dealership. break-in period is bullshit.
If you have ever seen how the BMW factory builds a car and an engine, you might think differently. The car is run on a machine, but not long enough to COMPLETELY seat the piston rings or have the bearings WEAR in. Done properly it can take 50-200 miles to get the piston rings to seat COMPLETELY. Longer with engines withn Alusil cylinder walls.
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      02-11-2009, 05:10 PM   #21
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Quote:
Originally Posted by DrGP View Post
Actually there is better (IMHO) alternative to those 2 techniques. It is the Aggressive break in. You do not beat the car( drive it like you stole it) but you do drive drive it aggressively and take the engine to the redline from day #1. That does not mean drag race like runs to the redline. The engine CAN be taken to the redline(IMHO Should) in a gradual manner followed by coasting back to lower RPMs by engine braking. The engine braking is most important in insuring the piston rings seat. If your waiting 1200miles for you piston rings to seat, you are waiting to long. ESPECIALLY in the N54 engine with cast iron cylinder sleeves. Alusil linings will take longer. Check out Motoman http://www.mototuneusa.com/break_in_secrets.htm. Some will discredit this and put it down. Those of us who have followed this technique know better. But how could we know better than the BMW engineers? Because we are concerned about have the engine break in and pistons seat 100%. BMW engineers are thinking about how much it will cost BMW to replace an engine if someone gets TOO OVERZELOUS during the break in and trashes the engine. If the engine is going to, blow, don't you want to have it happen right away ? BMW doesn't want it to happen while it is under warranty.
I do agree with an aggressive break in, and do believe two pieces of metal which have never seen each other before and are only seperated by a tiny oil film need to be broken in.
I red lined my cars as well from day one but starting under under light load and building it up, eg redline it in the lower gears, then downhill in top gear (if you can) etc.
Most important to me though is avoiding 1200mls with zillions of cold starts. That's killing it. So far on each new car we've taken it for a weekend out, doing 600-800 mls in two days, choosing the fun roads (that would not be a highway...). Good fun, pushing it, hotel somewhere, good other stuff, and i consider the car to be well broken in after that with basically 3 cold starts (the first one at the dealer.)
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      02-11-2009, 05:28 PM   #22
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exactly what i was trying to say
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