|
|
|
12-01-2007, 06:05 PM | #1 |
New Member
3
Rep 12
Posts |
Correct method of "breaking in" a BMW
I've never owned a new car, let alone a BMW, but I would like to know others' thoughts on if there is a "correct" manner of breaking in a new BMW engine? And anything different for a turbo engine?
I've read about various methods online, but no real concensus. |
12-01-2007, 06:12 PM | #2 |
Colonel
94
Rep 2,012
Posts |
i think the general concensus is 500 miles under 4k rpm and to be on the safe side 1000 miles. And after that do an oil change.
but i've seen people with build motors break in their motors with a nice time at the drag strip. I'd take the first method :] |
Appreciate
0
|
12-01-2007, 06:50 PM | #3 |
Zoom Zoom
38
Rep 1,069
Posts |
Depends on the engine. I believe most BMW engines do not have specific requirements on break-in (i.e. rev limits). Regardless, the important rule is this: vary engine speed, be easy on the clutch.
__________________
In the garage: 2022 G80 M3 Manual - Portimao Blue
|
Appreciate
0
|
12-01-2007, 07:08 PM | #4 |
Captain
145
Rep 917
Posts
Drives: 2015 BMW M Sports Convertible
Join Date: May 2005
Location: Auckland New Zealand
|
All new BMW engines are run at the factory now and do not need any service until the car computer tells you. My first service in my new 118 diesel is 30,000ks:smile:
|
Appreciate
0
|
12-01-2007, 08:07 PM | #5 |
Private First Class
2
Rep 156
Posts |
Some of these were already mentioned, but the BMW recommended break-in procedures will be in the owners manual. Generally you want to keep your revs below 4500, don't go above 100mph, avoid hard breaking and vary your engine speed often for the first 1200-1500 miles.
I like the idea of performing an oil change after that...so I'll probably try it out. As far as service intervals...the car will tell you. I don't wait till the service indicator to change my oil though. 15,000 miles between oil changes has always seemed completely insane to me. I do it every 5000 miles. |
Appreciate
0
|
12-01-2007, 09:07 PM | #6 |
Not a Newbie
1
Rep 173
Posts |
This hot-topic will go on forever with people's unfounded fears and opinions. The bottom line here is breaking-in the powertrain means seating the wear-surfaces. Approximately 90% of that breaking-in happens in the first 20 miles of driving. Drive it dynamically and variably in those first 20 miles and you've done the job quite well. Make sure to include WOT from idle to redline, and also engine braking from redline to idle, and some varying engine load everywhere in the middle. Alot of people will freak out saying to drive off the lot [after warming it up] with your foot to the floor, but those same people haven't a clue what the physics of the break-in procedure is like.
Enjoy, Ryan
__________________
[SIGPIC][/SIGPIC]
|
Appreciate
0
|
12-01-2007, 09:50 PM | #7 |
First Lieutenant
15
Rep 361
Posts |
Some very different opinions here...
Anyone with the owners manual from a 335 want to post?
__________________
:roundel: :roundel: :roundel: :roundel: :roundel: :roundel: :roundel: :roundel: :roundel:
|
Appreciate
0
|
12-01-2007, 09:55 PM | #8 |
Captain
145
Rep 917
Posts
Drives: 2015 BMW M Sports Convertible
Join Date: May 2005
Location: Auckland New Zealand
|
Owners hand book says:
Up to 1250 miles maximum 4500rpm or 100mph Avoid full throttle and do not use the automatic transmission kick-down From 1250 miles onwards Engine and road speeds can be gradually increased If you need to check on what service is required all you have to do is hand the remote control key to the BMW service adviser as all the cars information is held in the remote control key. |
Appreciate
0
|
12-01-2007, 10:16 PM | #9 |
Second Lieutenant
7
Rep 222
Posts |
|
Appreciate
0
|
12-02-2007, 12:37 AM | #12 |
Private
5
Rep 72
Posts |
I dont care what anybody else say but for the first 1500 km or 1000 miles do not go over 60% of rpm of the redline and do not drive at a constant speed on the highway (ie do not do not drive a a constant rpm), drive on side streets to vary engine speed. As for oil changes, I would change oil for the first time after 5000 km or 3000 miles. I know BMW covers oil changes after 15 000 miles or 25 000 km but I would not worry about paying the extra $100 on an oil change for a car I was planning to keep. If it was lease that is a different story!
|
Appreciate
0
|
12-02-2007, 11:39 AM | #13 |
Not a Newbie
1
Rep 173
Posts |
Apparently you feel it's better to "shock" the rings and bearings to sudden high load well after they've worn in; why?
__________________
[SIGPIC][/SIGPIC]
|
Appreciate
0
|
12-02-2007, 03:00 PM | #14 |
Private First Class
14
Rep 191
Posts |
|
Appreciate
0
|
12-02-2007, 05:10 PM | #15 |
4-6-8
233
Rep 990
Posts |
First 100 miles vary the rpm, go up and then come back down easy. Then keep it gentle for the next 1000 miles then let er rip.
__________________
M3 E46 PY/Black
S2000 AP2 GPW/Tan |
Appreciate
0
|
12-02-2007, 10:02 PM | #17 |
Private First Class
3
Rep 184
Posts |
BMW is well qualified to recommend the proper break-in procedure for the engine they designed and manufacture.
Those wear surfaces that need to mate together? BMW designed them. How many tens of thousands of test hours went into the develpment of the N54? Listen to the folks that brought this engine into existence. They have spent more time with the N54 than any of us ever will. |
Appreciate
0
|
12-02-2007, 10:24 PM | #18 | |
Captain
145
Rep 917
Posts
Drives: 2015 BMW M Sports Convertible
Join Date: May 2005
Location: Auckland New Zealand
|
Quote:
|
|
Appreciate
0
|
12-02-2007, 10:42 PM | #20 |
4-6-8
233
Rep 990
Posts |
To ensure everything gets seated correctly and everthing comes together the way it should. I've noticed that many credible sources recommend varying the rpms the first few miles. I follow it for 100 miles.
__________________
M3 E46 PY/Black
S2000 AP2 GPW/Tan |
Appreciate
0
|
12-03-2007, 01:06 PM | #21 |
Major General
2725
Rep 6,750
Posts |
The manual clearly states the 4.5k rpm, < 100 mph, no lugging, varying rpm, no full load for 1250mi rules. I've followed most of these recommendations, but not all.
I think the proper way to break in a BMW is as follows: - Pick it up at the Welt in Munich - Go to the nearby BMW dealership and ADAC across the street (accomplishes 3 things: gets you an Austrian vignette, allows you to buy cool BMW Euro items, varies the RPM over the first 20-30 miles) - Head south, avoiding the Autobahn if possible (you can substitute any other cardinal point) - Once you've reached at least 1000 miles, let her rip on the Nurburgring Any other break-in methods have hereby been superceded by this one. :biggrin:
__________________
2018 F80 Santorini 2019 Z4 3.0i 2022 X2 M35i |
Appreciate
0
|
12-04-2007, 02:25 AM | #22 |
Banned
33
Rep 390
Posts |
I totally agree, I have asked our techs many times and the said the same thing. No need for a break-in period, but vary the RPM and engine speed.
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|