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Old 27.03.2017, 01:24
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BMW oil change interval - how long?

hello,

I own a 2010 BMW 325d touring which is covered by the swiss 100K km / 10 yr free service. My last service interval was 14 months ago at 50K km mileage. It is currently at 60K kms and I am about to start a long road trip. My driving is approx 60% autobahn 40% town.

Do I / should I change the oil? The dash computer tells me the next oil change is not due until another 19 000 km, which sounds a heck of a long interval with a diesel engine. I checked with the main dealer and they say the same. I am not very well versed in engine specifics but at the same time I dont want to cause any unnecessary damage with degraded oil. The car is running pristine, I wish to keep it this way! I also feel a but sus about advice from BMW - are they trying to save money and deliberately extending the oil change intervals since we are on a free service deal?

googled around a bit and consensus is to change the oil once a year for diesel engines, regardless of mileage. Any BMW owners out there who can offer advice??
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Old 27.03.2017, 06:55
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Re: BMW oil change interval - how long?

We own the same vehicle and receive similar information from our dealer, who checks it twice a year when we get the winter/summer tire switch.
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Old 27.03.2017, 08:37
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Re: BMW oil change interval - how long?

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googled around a bit and consensus is to change the oil once a year for diesel engines, regardless of mileage. Any BMW owners out there who can offer advice??
Service interval indicator is correct. BMW have used "use based servicing" for years - and high quality long life oil for years. Going 25-30k between services is not a problem.
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Old 27.03.2017, 10:22
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Re: BMW oil change interval - how long?

have to admit, the OCD is kicking in and can feel the itch to swap the oil but will listen to the experts and advice from here
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Old 27.03.2017, 10:38
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Re: BMW oil change interval - how long?

i used to have a petrol engined 3 series and the service interval was also about 22k and every 2 years.


I did notice during the tire change that sometimes they top up the oil (and all liquids are chargeable). Whether this was really needed or not I still do not know, but sounds like a good idea for you to check in the middle of your road trip if you need to top it up.
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Old 27.03.2017, 11:46
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Re: BMW oil change interval - how long?

Not a BMW owner, but if you are changing oil based on distance rather than time, you'd want to at least check the oil level every now and again to make sure that if you happen to start losing oil for any reason (leaks), that you can both find out by viewing the level as well as avoid damage by topping it up in timer.
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Old 27.03.2017, 13:02
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Re: BMW oil change interval - how long?

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Service interval indicator is correct. BMW have used "use based servicing" for years - and high quality long life oil for years. Going 25-30k between services is not a problem.
As above, as the car is being serviced by BMW they will be using the correct spec of longlife oil so going by the indicator is fine.

Where you get problems is when people start objecting to paying 20-30CHF per litre for oil and non OEM dealers will just stick a regular synthetic 0W30 oil in which costs 1/4 of the price but degrades much faster.

Basically, enjoy the trip and trust the indicator in this case
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Old 27.03.2017, 15:49
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Re: BMW oil change interval - how long?

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As above, as the car is being serviced by BMW they will be using the correct spec of longlife oil so going by the indicator is fine.

Where you get problems is when people start objecting to paying 20-30CHF per litre for oil and non OEM dealers will just stick a regular synthetic 0W30 oil in which costs 1/4 of the price but degrades much faster.

Basically, enjoy the trip and trust the indicator in this case
0W30 oil is far from an ordinary oil, you wouls be hard pressed to find it for 7 a litre anywhere.
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Old 27.03.2017, 16:33
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Re: BMW oil change interval - how long?

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0W30 oil is far from an ordinary oil, you wouls be hard pressed to find it for 7 a litre anywhere.
Quite a choice on Amazon.de for 7-10 EUR a litre, including free delivery to Switzerland.
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Old 27.03.2017, 17:56
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Re: BMW oil change interval - how long?

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Quite a choice on Amazon.de for 7-10 EUR a litre, including free delivery to Switzerland.
Certainly never seen in CH at those prices, unless you get stung for import charges its a good deal.
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Old 27.03.2017, 18:00
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Re: BMW oil change interval - how long?

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Certainly never seen in CH at those prices, unless you get stung for import charges its a good deal.
https://www.amazon.de/Castrol-EDGE-M...ords=0w30+ll04

7.59 euro per liter. 19% German VAT will be deducted and 8% Swiss VAT added.
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Old 27.03.2017, 18:15
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Re: BMW oil change interval - how long?

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0W30 oil is far from an ordinary oil, you wouls be hard pressed to find it for 7 a litre anywhere.
As someone whose previous job was product manager for oil (amongst other things) for the largest car parts distributor in the UK I can categorically say you're wrong there.

0W30 is absolutely ordinary oil, and has been for 15+ years as it's the standard stuff used by VW Group. You can buy a huge number of variations of it depending on the additives in the oil to meet the different OEM specs, but a lot of garages will just throw the cheap stuff in. That's kind-of OK depending on the car - with VWs you can switch the car from longlife to regular servicing and use lower grade oil. However, if you have a diesel with a particulate filter you MUST use a 'low SAP' oil or it will cause you all kinds of problems.

With regard to the OP, this is irrelevant as BMW will only use the approved stuff, but is worth knowing if using different garages.
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Old 27.03.2017, 22:43
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Re: BMW oil change interval - how long?

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Not a BMW owner, but if you are changing oil based on distance rather than time, you'd want to at least check the oil level every now and again to make sure that if you happen to start losing oil for any reason (leaks), that you can both find out by viewing the level as well as avoid damage by topping it up in timer.
That's a very good advice. I do it regularly and for sure before/during/after any longer trip.

But also a good practice is not to change the oil/filter just shortly before the trip. I did it (hence the lesson learned) just a day before a 500km drive. I trusted that everything was done correctly by the mechanic, so I haven't checked the oil level myself right after. After driving around 50km "check engine" light up. I stopped the car, checked the oil and it was completely dry... I don't know how long I was going on a dry engine but there was not a single oil drop on the dipstick. It turned out that the mechanic hasn't screwed the oil filter properly. Fortunately the engine survived.
So always check your oil, even if your sophisticated computer says "Level OK". Nowadays you never know when a machine uprising takes place
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Old 27.03.2017, 22:55
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Re: BMW oil change interval - how long?

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That's a very good advice. I do it regularly and for sure before/during/after any longer trip.

But also a good practice is not to change the oil/filter just shortly before the trip. I did it (hence the lesson learned) just a day before a 500km drive. I trusted that everything was done correctly by the mechanic, so I haven't checked the oil level myself right after. After driving around 50km "check engine" light up. I stopped the car, checked the oil and it was completely dry... I don't know how long I was going on a dry engine but there was not a single oil drop on the dipstick. It turned out that the mechanic hasn't screwed the oil filter properly. Fortunately the engine survived.
So always check your oil, even if your sophisticated computer says "Level OK". Nowadays you never know when a machine uprising takes place
that's the nice thing about a BMW. it has an oil level sensor that will warn you and no dipstick.
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Old 27.03.2017, 23:14
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Re: BMW oil change interval - how long?

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that's the nice thing about a BMW. it has an oil level sensor that will warn you and no dipstick.
Do you think that works 100% of the time? No malfunctions ever? I'm not an expert but I'm wondering how exactly such sensor works (will do my reading later). I'd rather have an old fashion dipstick just to be sure what's happening down there.
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Old 27.03.2017, 23:22
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Re: BMW oil change interval - how long?

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Do you think that works 100% of the time? No malfunctions ever? I'm not an expert but I'm wondering how exactly such sensor works (will do my reading later). I'd rather have an old fashion dipstick just to be sure what's happening down there.
Chances are, with a modern engine management system, that it monitors oil temp and pressure as well, and compares that to coolant temp, and engine load, and puts the engine into limp home mode if it looks like there isn't enough oil.
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Old 28.03.2017, 07:57
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Re: BMW oil change interval - how long?

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Do you think that works 100% of the time? No malfunctions ever? I'm not an expert but I'm wondering how exactly such sensor works (will do my reading later). I'd rather have an old fashion dipstick just to be sure what's happening down there.
A sensor monitoring the oil level, and an electronics system monitoring the sensor EVERY MINUTE the engine is working is MUCH more reliable than a human who monitors once a month or once a week.

The engine will tell you within seconds if something is wrong with the oil BEFORE damage occurs

A human who checks once a week might discover the oil is seriously low DAYS after the event occured.

A huge difference.
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Old 28.03.2017, 11:20
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Re: BMW oil change interval - how long?

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Do you think that works 100% of the time? No malfunctions ever? I'm not an expert but I'm wondering how exactly such sensor works (will do my reading later). I'd rather have an old fashion dipstick just to be sure what's happening down there.
The sensor will be connected in a way that if it fails it will show the oil level as low, not as OK. Effectively the oil light is permanently on, unless it's receiving a signal to say it's all OK rather than the other way around.
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Old 28.03.2017, 11:32
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Re: BMW oil change interval - how long?

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The sensor will be connected in a way that if it fails it will show the oil level as low, not as OK. Effectively the oil light is permanently on, unless it's receiving a signal to say it's all OK rather than the other way around.
A bit like an airbag light.
If the seat sensor fails the light goes on and the airbag will deploy in an accident.
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Old 28.03.2017, 15:50
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Re: BMW oil change interval - how long?

I thought most modern cars with a dipstick have a sensor IN ADDITION to it.
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