break in period

Speedy E90 · 06-26-2005, 05:17 PM

I am about to take delivery of my E90 and want to make sure to break the engine in right. Does anyone have advice on which guidlines to follow?

RedStripe · 06-26-2005, 05:18 PM

Please do a search. There are a lot of posts on this topic with no real definitive answer.

Petercat · 06-26-2005, 05:18 PM

My dealer told me there is no break in period (Wah?)...
Regardless, I don't think I'll be redlining it soon.

AZBob · 06-26-2005, 05:28 PM

The owner's manual discusses break-in.

Hunter399 · 06-26-2005, 05:30 PM

My Mercedes dealer insured me that the engines come already broken in.
I wonder if this is the same with BMW?

YYdoodle · 06-26-2005, 05:34 PM

Safest would be just to follow BMW's recommendation (will be in the manual). Here's another thread on it

http://www.e90post.com/forums/showth...ighlight=break

agarbati · 06-26-2005, 06:49 PM

Quote:

Originally Posted by Petercat

My dealer told me there is no break in period (Wah?)...
Regardless, I don't think I'll be redlining it soon.

Petercat, Sears or Motorwerks?

e90fanatic · 06-26-2005, 06:59 PM

There's no such thing as the engine already broken in. Most people don't even have a clue what it is. The thing with breaking the engine in is that engine parts are new and that they are not 100% accurate. The break in period is to allow the parts to smooth out uneven parts. The burnt smell your car has in the first few months are from breaking in....just give it 1500-3000 miles to allow your engine to break in. All engines goes through this but if you ignore it, it won't do much of a damage as well (not going to explode or anything)

Mark · 06-26-2005, 08:16 PM

the factory runs engines for a bit before they release the car, so thats what alot of people mean by the car is already broken in by the factory. With modern engines built by machines with very high tolerances, I dont think breaking in an engine is an issue anymore, they essentialy are pre-broken in between the high engineering standards and the factory running the engines first.

But if its a concern to you, i would do it just for the piece of mind that comes with it, drive it under 4500rpm for 1000miles.

One thing that always concerned me tho, were the metal shavings from the factory inside the cylinder. They do clean the engines but there may be a little residdue left over from the drillings so I like to get the oil changed after the first 1000 miles to make sure there is no chance of any shavings in the engine. but this is only my own superstition

wac77 · 06-26-2005, 08:34 PM

Break-in period
Moving parts need breaking-in time to adjust to
each other. Please follow the instructions below
in order to achieve the optimal service life and
economy of operation for your vehicle.

Engine and differential
Up to 1,250 miles/2,000 km:
Attempt to vary both engine and vehicle
speeds, but refrain from exceeding an engine
speed of 4,500 rpm or a driving speed of
100 mph or 160 km/h.
Always obey all official speed limits.
Avoid full-throttle operation and use of the
transmission's kick-down mode.
Once you have driven 1,250 miles/2,000 km,
the engine and vehicle speeds can be gradually
increased.

Tires
Due to technical factors associated with their
manufacture, tires do not achieve their full traction
potential until after an initial break-in
period. Therefore, drive reservedly during the
first 200 miles/300 km.

Brake system
Brakes require an initial break-in period of
approx. 300 miles/500 km to achieve optimized
contact and wear patterns between brake pads
and rotors. Drive with caution during this breakin
period.

Clutch
The function of the clutch reaches its optimal
level only after a distance driven of approx.
300 miles/500 km. During this break-in period,
engage the clutch gently.

06-26-2005, 05:17 PM	#1
Speedy E90 330 Sport, Comfort, Winter, Navi, Carbon Fiber Lip, Sparkling Graphite, Beige Leather, V710 23 Rep 155 Posts Drives: BMW E90 330 sport Join Date: Jun 2005 Location: Washington D.C., sometimes Durham, NC iTrader: (0)	break in period I am about to take delivery of my E90 and want to make sure to break the engine in right. Does anyone have advice on which guidlines to follow?
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06-26-2005, 05:18 PM	#2
RedStripe Captain 96 Rep 649 Posts Drives: 2006 BMW 325i Join Date: May 2005 Location: Texas iTrader: (1) Garage List 2006 BMW 325i [0.00]	Please do a search. There are a lot of posts on this topic with no real definitive answer.
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06-26-2005, 05:18 PM	#3
Petercat Cat Herder 8 Rep 274 Posts Drives: LR3, again... Join Date: Jun 2005 Location: Mpls, MN iTrader: (0)	My dealer told me there is no break in period (Wah?)... Regardless, I don't think I'll be redlining it soon.
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06-26-2005, 05:28 PM	#4
AZBob New Member 0 Rep 24 Posts Drives: 2003 Mazda6 Join Date: Apr 2005 Location: Fountain Hills, AZ iTrader: (0)	The owner's manual discusses break-in.
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06-26-2005, 05:30 PM	#5
Hunter399 Major General 325 Rep 8,091 Posts Drives: F90M5 Join Date: Apr 2005 Location: Houston, TX iTrader: (33)	My Mercedes dealer insured me that the engines come already broken in. I wonder if this is the same with BMW?
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06-26-2005, 05:34 PM	#6
YYdoodle Captain 115 Rep 666 Posts Drives: E92 M3 fanatic Join Date: Mar 2005 Location: MD iTrader: (0)	Safest would be just to follow BMW's recommendation (will be in the manual). Here's another thread on it http://www.e90post.com/forums/showth...ighlight=break
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06-26-2005, 06:59 PM	#8
e90fanatic Absolute0 168 Rep 5,078 Posts Drives: Has a Roundel Join Date: Apr 2005 Location: TO/HK/NJ iTrader: (6)	There's no such thing as the engine already broken in. Most people don't even have a clue what it is. The thing with breaking the engine in is that engine parts are new and that they are not 100% accurate. The break in period is to allow the parts to smooth out uneven parts. The burnt smell your car has in the first few months are from breaking in....just give it 1500-3000 miles to allow your engine to break in. All engines goes through this but if you ignore it, it won't do much of a damage as well (not going to explode or anything) __________________ To procede or not to procede......
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06-26-2005, 08:16 PM	#9
Mark Administrator 6734 Rep 4,201 Posts Drives: 1M Join Date: Mar 2005 Location: USA iTrader: (1) Garage List 2011 BMW 1 Series M ... [8.34]	the factory runs engines for a bit before they release the car, so thats what alot of people mean by the car is already broken in by the factory. With modern engines built by machines with very high tolerances, I dont think breaking in an engine is an issue anymore, they essentialy are pre-broken in between the high engineering standards and the factory running the engines first. But if its a concern to you, i would do it just for the piece of mind that comes with it, drive it under 4500rpm for 1000miles. One thing that always concerned me tho, were the metal shavings from the factory inside the cylinder. They do clean the engines but there may be a little residdue left over from the drillings so I like to get the oil changed after the first 1000 miles to make sure there is no chance of any shavings in the engine. but this is only my own superstition __________________ BMW 1M. BMW M2. BMW M2.
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06-26-2005, 08:34 PM	#10
wac77 Private First Class 15 Rep 152 Posts Drives: 2023 BMW 330i Xdrive Join Date: Apr 2005 Location: Port Washington, NY iTrader: (0)	Here is what the manual says: Break-in period Moving parts need breaking-in time to adjust to each other. Please follow the instructions below in order to achieve the optimal service life and economy of operation for your vehicle. Engine and differential Up to 1,250 miles/2,000 km: Attempt to vary both engine and vehicle speeds, but refrain from exceeding an engine speed of 4,500 rpm or a driving speed of 100 mph or 160 km/h. Always obey all official speed limits. Avoid full-throttle operation and use of the transmission's kick-down mode. Once you have driven 1,250 miles/2,000 km, the engine and vehicle speeds can be gradually increased. Tires Due to technical factors associated with their manufacture, tires do not achieve their full traction potential until after an initial break-in period. Therefore, drive reservedly during the first 200 miles/300 km. Brake system Brakes require an initial break-in period of approx. 300 miles/500 km to achieve optimized contact and wear patterns between brake pads and rotors. Drive with caution during this breakin period. Clutch The function of the clutch reaches its optimal level only after a distance driven of approx. 300 miles/500 km. During this break-in period, engage the clutch gently.
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