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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Mechanical Maintenance and TSBs: Break-in / Oil & Fluids / Servicing / TSBs and Service Bulletin > I'm totally going to screw up the break-in period - this is not a "worry" post
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      04-25-2013, 02:33 PM   #1
itwasepic
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I'm totally going to screw up the break-in period - this is not a "worry" post

I gave my 335i a pat on the butt at the dealership then drove off with full acknowledgment that I am going to put my toe over the line on the break-in period. I found myself at 85 on the freeway and RPMs at 4500 on several occasion. I'm not doing burnouts but shoot, this is going to be hard to keep under 80 and not hit over 3000 on the RPM.

Good luck to me, I guess
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      04-25-2013, 03:02 PM   #2
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F30 sedan owners manual, page 156: "Do not exceed the maximum engine and road speed: For Gasoline engine, 4,500 rpm and 100 mph".

You are fine doing 85 mph and 4500 rpm.

I am in the same boat! I have about 300 miles on the odo.
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      04-25-2013, 03:05 PM   #3
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Quote:
Originally Posted by itwasepic View Post
I gave my 335i a pat on the butt at the dealership then drove off with full acknowledgment that I am going to put my toe over the line on the break-in period. I found myself at 85 on the freeway and RPMs at 4500 on several occasion. I'm not doing burnouts but shoot, this is going to be hard to keep under 80 and not hit over 3000 on the RPM.

Good luck to me, I guess
Just watch out for the 5.0
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      04-25-2013, 03:52 PM   #4
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Just watch out for the 5.0
I think a fuzz buster purchase is Top 5 on the list.
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      04-25-2013, 05:13 PM   #5
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R u guys aware before they leave the factory they are red lined in every gear, even when i picked it up at the welt they told me to go a head as fast as i could go
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      04-25-2013, 06:12 PM   #6
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Did not know this, thanks!
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      04-25-2013, 07:04 PM   #7
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You are very conservative about your driving. I reached almost 100 mph on the freeway for a couple of times after I picked up my 335i. Can't resist.
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      04-25-2013, 08:39 PM   #8
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Originally Posted by Nepal View Post
You are very conservative about your driving. I reached almost 100 mph on the freeway for a couple of times after I picked up my 335i. Can't resist.
I went 143 mph withn an hour of picking it up at the welt
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      04-25-2013, 08:49 PM   #9
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I went 143 mph withn an hour of picking it up at the welt
If I did this, I would probably spend the night in jail for sure.
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      04-25-2013, 09:03 PM   #10
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I bought my first BMW--a 2002-in 1968, and my last one in 2005. My salesman in 2005told me to watch out because BMWs are oil burners. I broke it in as I always have with a new car, and then added the first quart of oil after 100,000 miles. It did not burn oil.

I seem to remember that for the first time I did not have to change the break-in oil, and was told that BMW runs the engines on a stand, then changes the oil and then installs them, so that the engine is broken-in before we get the new car. I would be interested in whether any of you ignored break in and then kept the car more than a 100,000 miles? Did you ever have to add oil?
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      04-25-2013, 11:02 PM   #11
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Quote:
Originally Posted by glewinnek
I bought my first BMW--a 2002-in 1968, and my last one in 2005. My salesman in 2005told me to watch out because BMWs are oil burners. I broke it in as I always have with a new car, and then added the first quart of oil after 100,000 miles. It did not burn oil.

I seem to remember that for the first time I did not have to change the break-in oil, and was told that BMW runs the engines on a stand, then changes the oil and then installs them, so that the engine is broken-in before we get the new car. I would be interested in whether any of you ignored break in and then kept the car more than a 100,000 miles? Did you ever have to add oil?
100k miles must be wrong. I think its for the transmission, axles and all the other moving parts more than engine.
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      04-25-2013, 11:12 PM   #12
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Quote:
Originally Posted by Roki_014
R u guys aware before they leave the factory they are red lined in every gear, even when i picked it up at the welt they told me to go a head as fast as i could go
Amen
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      04-26-2013, 02:57 PM   #13
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Quote:
Originally Posted by Roki_014 View Post
R u guys aware before they leave the factory they are red lined in every gear, even when i picked it up at the welt they told me to go a head as fast as i could go
sure, 40 years ago.. Today BMW test engines in a test cell, no transmission attached. To cut down on test time, each engine will be tested in a known cold state, that is cold engine to start with, warm fluids going in, and a 1-2 minute test max. It ain't redlined, is is tested to achieve a certain level. By testing each engine exactly the same way you can predict future (post run in) performance at normal operating temperature.
There's three stages in engine testing:
- "cold" = sounds like bad, but you start with well known conditions which change predictable during a short test. If you get X% performance the engine is good. These are checked against durability test with one per hundred, or per thousand.
- "warm up" = a state where you really don't know where each fluid/component is temperature wise, and not reliable for testing
- "warmed up" = Nice to have but too costly
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      04-27-2013, 08:58 PM   #14
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Quote:
Originally Posted by F104 View Post
sure, 40 years ago.. Today BMW test engines in a test cell, no transmission attached. To cut down on test time, each engine will be tested in a known cold state, that is cold engine to start with, warm fluids going in, and a 1-2 minute test max. It ain't redlined, is is tested to achieve a certain level. By testing each engine exactly the same way you can predict future (post run in) performance at normal operating temperature.
There's three stages in engine testing:
- "cold" = sounds like bad, but you start with well known conditions which change predictable during a short test. If you get X% performance the engine is good. These are checked against durability test with one per hundred, or per thousand.
- "warm up" = a state where you really don't know where each fluid/component is temperature wise, and not reliable for testing
- "warmed up" = Nice to have but too costly
All freshly built engines need to be red lined after being built, warmed up, then taken to red line.
Don't see why BMW would be any different.
Perhaps you're describing something different like, there is the actual break in of a freshly built engine, and then there is a test performed on certain engines.

After being freshly built they have a system to set the engine into for cooling and such, true no trans hook up but doesn't need that.
Fill with break in oil, fire up, warm up, taken up slowly to max engine speed.
Break in oil drained, fresh factory oil filled, move along.

The "break in" for the rest of the car will happen during the first few hundred miles driven by the owner.
Some of those parts are brakes, tires, clutch in MT, differential, etc...
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      05-06-2013, 01:23 PM   #15
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It's a controversial topic, some say follow the manual, some say follow the method below.

First:
The first 20-40 miles (depending on the source) are the most important to run the engine more on the higher rpm side to get the piston rings to seat properly (note high RPM, not high speed). This will help the seals to seat the best, get the most power, keep high compression, increased longevity, etc.
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      05-06-2013, 07:52 PM   #16
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So what is the real answer? I have only 150 miles currently on my F30 328i. I havent been heavy on the gas and kept it under 3k rpm. I've mainly been driving it in eco pro mode (this has been so hard, i just want to drive!!)

Any recommendations? Does it actually make a difference? Seems like everyone has their own opinion. Any help would be grateful!

Thanks in advance
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      05-06-2013, 08:33 PM   #17
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Originally Posted by gio2490 View Post
So what is the real answer? I have only 150 miles currently on my F30 328i. I havent been heavy on the gas and kept it under 3k rpm. I've mainly been driving it in eco pro mode (this has been so hard, i just want to drive!!)

Any recommendations? Does it actually make a difference? Seems like everyone has their own opinion. Any help would be grateful!

Thanks in advance
I don't think there is a real answer. Part of it is done so the drivetrain can get slowly broken in. IMO I'm just going to wait until the motor gets warmed up then take it for 20 miles and vary speeds/RPM's on the way to the clear bra shop
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      05-10-2013, 09:16 PM   #18
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So what is the break-in miles?
I have a 335i m sport, with 300 miles.
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      05-11-2013, 11:02 AM   #19
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So what is the break-in miles?
I have a 335i m sport, with 300 miles.
1200 miles per the manual. not to exceed 4500 RPM or 100MPH during that period.
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      05-12-2013, 03:36 AM   #20
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I like this follow up the best to break in the new engine.

http://www.popularmechanics.com/cars...k-in-a-new-car
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      05-15-2013, 09:41 AM   #21
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Originally Posted by ckret View Post
I like this follow up the best to break in the new engine.
http://www.popularmechanics.com/cars...k-in-a-new-car
Quote:
Engine Cylinder Walls:
Piston rings don’t rely on their spring tension to seal against the cylinder bores. Instead, combustion gases work their way between the rings and the piston and force the rings outward. During the first few minutes of engine operation, it’s important that the throttle be opened pretty far at lower rpms to provide this high pressure. Otherwise, the rings won’t burnish the cylinder walls properly, and the engine will have high volumes of blow-by—which means excessive oil consumption and shortened engine life. If you’ve ever seen the car jockeys who drive new cars off the end of the production line into the storage lot, or the transporter drivers zipping up and down the car-hauler ramps, you’ll realize that this all-important step has been performed for you many times. If you’re installing a new engine, simply give it a few seconds of wide-open throttle in a high gear. For the first thousand miles, avoid constant speeds and throttle settings. If you commute in normal stop-and-go traffic, you’ll be fine. I advise against cruise-controlled sojourns across Nebraska.
I get what's being said here... but the thing is, it would seem that running wide-open throttle in a high gear would result in redline engine rpm and very high road speed. And this kinda conflicts with the manual's advice to avoid 4500+rpm, full-throttle, very high speeds, etc.

Unless the expectation is that you floor it in a high gear (just for a few seconds) at a fairly low rpm... but would that still accomplish the intended?
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      05-16-2013, 08:53 AM   #22
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A lot of useful information shared so far. So what do you guys suggest if I have to drive 530 miles after my pick-up in Munich in early July? All of it will be on the freeway.

Shall I just play with the car accelerating from 60 MPH to 90, keep the speed for a few minutes and then let it slow down to 60 and speed up again, making sure not to go above 4500 RPM, but make it in somewhat dynamic fashion?

It's gonna be a rather long drive especially after flying across the Globe from SFO the day before, so want to make the trip as short as possible, but also don't want to screw up the break-in of my car with setting the speedometer to 90 for the whole trip. :-/
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