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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 04-28-2009, 05:27 PM   #1
tdubb1234
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how long to change oil

I just change my oil using mobile 1 0-40w

how long should I wait before the next oil change.

I reset the oil change indicator and now it says inspection is in 15xxx miles.

why?

I already have like 43xxx miles on my car
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Old 04-28-2009, 05:29 PM   #2
justinrn21
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The book says 15,000...common sense says that's too long, so around 7,500 miles.
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Old 04-28-2009, 05:30 PM   #3
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Once a year is good.
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Old 04-28-2009, 05:33 PM   #4
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Old 04-28-2009, 06:30 PM   #5
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id say change it when your service indicator gets to 5000, rather than 0.

i just sent in an oil analysis with that same oil and seems like the oil probably lasts close to 10k miles, depending on conditions.

i'll know more after i send in the next sample.
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Old 04-28-2009, 06:38 PM   #6
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Synthetic oil will last the recommended interval, filter won't. If you're cheap, change the filter halfway through the 15,000 mile mark (don't recommend it though), or just change oil/filter anywhere between 7,500-10,000 miles (recommended). I know I could of told you to search, don't want to be a prick, and don't want other searchers who fall upon this thread to just read a bunch of "search!!!" comments.
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Old 04-28-2009, 06:42 PM   #7
E36graduate
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my oil change indicator, I think I have one, hasnt been used in 200,000 miles, or since I bought it back when she had around 70,000 miles on her...isn't it supposed to show up as a bar indicator or something. Change your oil every 5000 or 7000 miles is what i do, sometimes a little longer, however I'm using full synthetic.
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Old 04-28-2009, 06:50 PM   #8
jeffro3000
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Originally Posted by three2slick View Post
Synthetic oil will last the recommended interval, filter won't. If you're cheap, change the filter halfway through the 15,000 mile mark (don't recommend it though), or just change oil/filter anywhere between 7,500-10,000 miles (recommended). I know I could of told you to search, don't want to be a prick, and don't want other searchers who fall upon this thread to just read a bunch of "search!!!" comments.
The oil wont last 15k miles. i just sent in a sample at 5400 miles and it has already sheared from a 14 to 12.13 at 100C. TBN is also down from 11.3 to 4.8. This is an LL-01 oil too, Mobil 1 0w-40. It's not going to last 15k miles.

However 7.5-10k is a good range for how long the oil will actually last, and when it should be changed.

Quote:
Originally Posted by E36graduate View Post
my oil change indicator, I think I have one, hasnt been used in 200,000 miles, or since I bought it back when she had around 70,000 miles on her...isn't it supposed to show up as a bar indicator or something. Change your oil every 5000 or 7000 miles is what i do, sometimes a little longer, however I'm using full synthetic.
Just being fully synthetic isnt enough. It needs to be an LL-01 approved oil:

http://www.bmwusa.com/Standard/Conte...ngineOils.aspx
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Old 04-28-2009, 06:55 PM   #9
andrew765
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dealer said once a year.but twice a year is recommended.so id say about 6 months.but its prob not that neccesary.
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Old 04-28-2009, 07:05 PM   #10
217Bimmer
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yes, i would trust random people on the internet as opposed to bmw. bmw obviously says 15,000 mile service intervals because they want widespread engine failures and massive car recalls. don't you know by now that; e46 knowledge > bmw engineering
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Old 04-28-2009, 07:06 PM   #11
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Originally Posted by 217Bimmer View Post
yes, i would trust random people on the internet as opposed to bmw. bmw obviously says 15,000 mile service intervals because they want widespread engine failures and massive car recalls. don't you know by now that; e46 knowledge > bmw engineering


It's called marketing and cost-cutting measures. Read a damn book.
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Old 04-28-2009, 07:07 PM   #12
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30,000 miles because that's what BMW recommends...

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Old 04-28-2009, 07:10 PM   #13
217Bimmer
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see it didn't take long.
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Old 04-28-2009, 07:19 PM   #14
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Originally Posted by 217Bimmer View Post
yes, i would trust random people on the internet as opposed to bmw. bmw obviously says 15,000 mile service intervals because they want widespread engine failures and massive car recalls. don't you know by now that; e46 knowledge > bmw engineering
i dont give a damn what bmw says.

An analysis of MY oil in MY car under MY normal driving conditions says the oil wont last more than 10k miles. Obviously BMW would rather not pay for 10k oil changes for every car under warranty, so they recommend 15k intervals to save money.

BMW also says transmission fluid is lifetime, and to only clean your seats with BMW leather cleaner.
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Old 04-28-2009, 07:21 PM   #15
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Originally Posted by kpeng View Post


It's called marketing and cost-cutting measures. Read a damn book.
which book? the one about bmw dealerships making more money if they had recommended shorter service intervals on their cars? don't tell them.

the interval is also based on driving habits, so more than likely the service interval will be less than 15,000 miles if that makes you happier.
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Old 04-28-2009, 07:28 PM   #16
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which book? the one about bmw dealerships making more money if they had recommended shorter service intervals on their cars? don't tell them.

the interval is also based on driving habits, so more than likely the service interval will be less than 15,000 miles if that makes you happier.
Are you some sort of supertard?

Dude, BMW doesn't make more money if they recommend shorter service intervals. You know why? It's all covered under warranty, it comes out of their pockets. If they recommend longer intervals, not only does it cut their cost, but people are doing more damage to their car. So when their warranty is over, and it's up to them to pay out of their pockets for repairs, BMW has a long line of people waiting to pay for having been misguided.

Is this getting through to you at all? By recommend longer intervals, it's a win-win for BMW. It keeps the customers away when the repairs come out of BMW's pockets, but it brings them in once it comes out of the customer's pockets. Essentially, they are doubling their earning potential.
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Old 04-28-2009, 07:38 PM   #17
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tdubb you seriously need to learn how to search.
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Old 04-28-2009, 07:51 PM   #18
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Quote:
Originally Posted by justinrn21 View Post
The book says 15,000...common sense says that's too long, so around 7,500 miles.
Well I don't have any of that ****.
I change it every 25.000 miles.
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Old 04-28-2009, 08:39 PM   #19
sprintman
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I'd like to see a UOA on your 25,000 mile oil.
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Old 04-28-2009, 08:40 PM   #20
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Quote:
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I'd like to see a UOA on your 25,000 mile oil.
Its 5w30 by the way.
Im gonna change to 0w40.
5.000 miles to go.
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