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2010 2011 BMW 5 Series Forum F10 BMW 5-Series (F10) Forums General 5-Series Sedan and Wagon (F10 / F11) Forum Any Special "Running In" Needed for my 535D?
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      02-05-2013, 06:01 PM   #1
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Any Special "Running In" Needed for my 535D?

Hi folks - to all you diesel owners out there...I am supposed to get my new 535D tomorrow (finally) & as this will be the first time I have ever owned a diesel (my last 3 beemers were 4.4 V8), I was wondering if there was any specific thing/s I needed to do / be aware of wrt running the diesel in.

I did ask the salesman this same question & he told me that for the first 2,000 kms I just need to run-in the sports auto transmission to bed it in & avoid really long road trips where I just drive at 110 km/h for 4+ hours at a time (easy to do on OZ roads); in other words use a variety of speeds (incl. shorter road trips is OK) so that I also get to use the gearbox a fair bit.

Otherwise nothing special needed to run-in the diesel components.

Does any diesel owner out there have anything to add to this - really appreciate any feedback.
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      02-05-2013, 06:45 PM   #2
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Your salesman's advice is pretty good. Your owner's manual should also have some general advice under "breaking-in" the engine. Lot of people don't believe in it, but I sure don't think it hurts and it may make a difference in the long run. FWIW I had a 335d (same engine?) and it burned a little oil during the first couple thousand miles, then stopped burning oil completely. Metallurgy is different in the diesels. Really takes a long time before the engine is really broken-in, I think. I also have a VW TDI diesel sportwagen and the gas mileage has gradually increased by around 4 mi per gallon as the engine has loosened up some (at 45k mi now) and according to the TDI forum I may see another gallon or two increase until 60k mi when the engine can be considered broken-in.
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      02-05-2013, 11:59 PM   #3
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Your engine is a beast. Go and enjoy. Just feed it with quality diesel like Shell V-Power Diesel.
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      02-06-2013, 01:50 AM   #4
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As others have said , basically don't thrash it for the first 1200 miles and the increase your revs after that. Its in the manual and therefore I believe that's something you should follow.(If bmw say so then do so as they will know the most the car as they built it)

M6pwr - you say diesels take a long time to run in , why is that? Why do they differ to petrol engines in that respect?

Congrats on the car, I have a 530d and find the engine brilliant so the 535d I can only imagine.
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      02-06-2013, 02:29 AM   #5
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I'm no engineer but as I understand things proper "break in" is most important for the brake hardware, transmission and tires. Less so for the motor itself.

If you beat the hell out of the rotors the first 1000 miles or so there's a good chance you'll score the heck out of 'em and possibly warp the rotors.

Modern engines don't have the same issues with valve seating and gasket sealing because of higher engineering tolerances. My information comes from an uncle who is a mechanical engineer for 40+ years.
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      02-06-2013, 02:38 AM   #6
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Just drive it normally. Its to powerfull for you to be ringing the granny out of it all the time anyaway and don't be to gentle on the engine, it need few good bursts of power when new to seat the rings properly, you dont have to redline it but with a load on the engine (i.e. up hill or in a high gear) open the throttle right up. It will really loosen up between 15-20k miles and mpg will increase a little at that point.
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      02-06-2013, 02:45 AM   #7
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My experience over many years with diesel engines, 'moderation' is the word I'd use. But don't be too easy with a diesel, they do need a bit of work, not meaning high revs, to ensure you get good bedding in of the rings and prevent bore glazing (hence the oil burners). Plenty of reasonable and varied driving is the best way I've found to bed them in. Get some decent 50 to 100 mile runs (or longer), where there's plenty of heat in the engine. Worst case I can think of, is lots of short trips with cold starts for the first 1,000 miles.

Mpg does often improve over mileage but not always, some engines run well from day one. But have known a 'tight' VW diesel engine get to peak mpg at about 80k miles. Then a petrol engine can take 30k miles or more to get to best performance and mpg, so it's not just diesels.

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      02-06-2013, 04:02 AM   #8
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Quote:
Originally Posted by AP View Post
Its in the manual and therefore I believe that's something you should follow.(If bmw say so then do so as they will know the most the car as they built it)
Yeah they build and drive millions of testmiles with them. Any advice you get from us normal car owners is mostly based on the personal experience with <10 cars witout any real knowledge of how the enigne was actually affected by how they used the cars.
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      02-06-2013, 06:00 AM   #9
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Hi. I picked up mine last week and trust me, if anyone says not to pass 3000 revs for example for the first 2 or 3k km it's not possible... the engine it's such a gem, you just have to floor it once in a while, it asks for it. LOL. That being said like someone said earlier, you would have to be a maniac to be constantly pushing it to the redline. This morning i did a trip of aprox 100km, cruise control on 140km/h and even uphill the revs didn't passed 1900.

Good luck to us both, LOL.
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      02-06-2013, 06:08 AM   #10
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yes the engine revs so low, it really makes seem effortless. I don't find you have to rev it much at in most conditions. At 70mph the 530d is turning over at 1500RPM. Compared to my previous E39 530i which was about 2500RPM I recall (or thereabouts)

I find that the diesel seem to promote a more relaxed driving style for me. It certianly doesn't feel fast but then that is probably a sign of a good car that fast speeds don't feel like it.
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      02-06-2013, 06:10 AM   #11
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Quote:
Originally Posted by HighlandPete View Post
My experience over many years with diesel engines, 'moderation' is the word I'd use. But don't be too easy with a diesel, they do need a bit of work, not meaning high revs, to ensure you get good bedding in of the rings and prevent bore glazing (hence the oil burners). Plenty of reasonable and varied driving is the best way I've found to bed them in. Get some decent 50 to 100 mile runs (or longer), where there's plenty of heat in the engine. Worst case I can think of, is lots of short trips with cold starts for the first 1,000 miles.

Mpg does often improve over mileage but not always, some engines run well from day one. But have known a 'tight' VW diesel engine get to peak mpg at about 80k miles. Then a petrol engine can take 30k miles or more to get to best performance and mpg, so it's not just diesels.

HighlandPete
The more I read your posts the more interested I become in turbo diesels as a viable option. There might just be hope for this yank to one day get a diesel. I think I'd like to be one if those guys who keeps a diesel for life. It would be cool to lose that throw away mentality.

I live in a densely populated area and this engine seems like it would be a perfect match to my driving parameters.

Last edited by mryakanisachoad; 02-08-2013 at 10:10 PM..
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      02-08-2013, 06:06 PM   #12
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Quote:
Originally Posted by mryakanisachoad View Post
The more I read your posts the more interested I become in turbo diesels as a viable option. There might just be hope for this yank to one day get a diesel. I think I'd like to be one if those guys who keeps one until one of us drops.

I live in a densely populated area and this engine seems like it would be a perfect match to my driving parameters.
2 years ago I had a 530D, I found the engine to be fine, but lacking in excitement. 10 months ago I took delivery of a new 535D (313 bhp) and found the engine with its 2 turbos to be exactly what i was looking for...fast, exhilarating, economical and fun..I hope in the near future you also have the same.
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