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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 07-10-2007, 02:52 PM   #21
320de46m47
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im sorry but petrol is in fact disposed of into the atmosphere. if youre into conservation get a bike not a bmw
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Old 07-10-2007, 02:55 PM   #22
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wow, i guess i change my a bit too soon... i do it at 7 000km with filter, i use 0w40
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Old 07-10-2007, 03:36 PM   #23
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For Toronto I would reccomend:

Summer - OEM 5w30 from he dealership / with an OEM Filter.

Winter - Germam Castrol (GC) 0w30 has a green label, and says 'Made in Germany' on the back. Gets too cold in TO for the 5w30.

kbsilver - "The first number relates to cold viscosity. Anything lower than a 5 is assigned a 0 (otherwise with the new synthetics we would be into negative numbers). At operating temperature a 0-30 and a 5-30 are exactly the same (they both are a 30 weight equavalent). The difference is when you get to sub zero temperatures (like -40 or lower) the 0-30 might still pour when the 5-30 won't. Except for very few of us, 0 weight oil is never needed. It won't hurt, but not needed."

I do my oil every 10K kilometers that seems like a nice even number, easy to remember.
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Old 07-10-2007, 03:36 PM   #24
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Mobil 1 completed a study and found that older synthetic oil lubricates better than new synthetic oil. Thus, I change at 15k, and do my filter ay 7.5k. I think this is a good practice.
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Old 07-10-2007, 03:47 PM   #25
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You will not get a firm answer on this topic, just different opinions.
Hmm, typically the issue is that the question is poorly phrased, like in this thread. The real question is "how often should you change you oil?" Motor oil should be changed when its performance degrades, and it's been scientifically proven - numerous times, as in todd92's post - that BMW's recommended 15,000 mile interval is correct. At that point the oil's effectiveness is starting to degrade, but you've still got some leeway. Changing the oil and filter sooner derives no proven benefits. Not once has someone's oil analysis come back with results indicating the oil and filter should be changed sooner than factory interval. That is a fact; the rest is unsubstantiated opinion.
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Old 07-10-2007, 03:47 PM   #26
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bmw says every 25000 km
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Old 07-10-2007, 04:48 PM   #27
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Hmm, typically the issue is that the question is poorly phrased, like in this thread. The real question is "how often should you change you oil?" Motor oil should be changed when its performance degrades, and it's been scientifically proven - numerous times, as in todd92's post - that BMW's recommended 15,000 mile interval is correct. At that point the oil's effectiveness is starting to degrade, but you've still got some leeway. Changing the oil and filter sooner derives no proven benefits. Not once has someone's oil analysis come back with results indicating the oil and filter should be changed sooner than factory interval. That is a fact; the rest is unsubstantiated opinion.
wheres your proof? lol
unsubstantiated opinion....er what ? like yours you mean?
who the hell is todd?

Last edited by 320de46m47; 07-10-2007 at 04:53 PM.
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Old 07-10-2007, 04:55 PM   #28
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whats wrong with 0w40?

i don't drive my car in the winter so no need to worry there

is it bad to keep on changin oil brands and grade? e.x 0w40 to 5w30 to 0w30 and soo on..
Quote:
Originally Posted by berserker View Post
For Toronto I would reccomend:

Summer - OEM 5w30 from he dealership / with an OEM Filter.

Winter - Germam Castrol (GC) 0w30 has a green label, and says 'Made in Germany' on the back. Gets too cold in TO for the 5w30.

kbsilver - "The first number relates to cold viscosity. Anything lower than a 5 is assigned a 0 (otherwise with the new synthetics we would be into negative numbers). At operating temperature a 0-30 and a 5-30 are exactly the same (they both are a 30 weight equavalent). The difference is when you get to sub zero temperatures (like -40 or lower) the 0-30 might still pour when the 5-30 won't. Except for very few of us, 0 weight oil is never needed. It won't hurt, but not needed."

I do my oil every 10K kilometers that seems like a nice even number, easy to remember.
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Old 07-10-2007, 05:05 PM   #29
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I would do 10k KM, that's like 6500 Miles, on synthetic of course.

For the 3000 Mile ones, I guess if they are using regular oil they need to do that.
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Old 07-10-2007, 08:27 PM   #30
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wheres your proof? lol
unsubstantiated opinion....er what ? like yours you mean?
who the hell is todd?
...what? Can you try again, using sentences and decent grammar?
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Old 07-10-2007, 08:35 PM   #31
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Old 07-10-2007, 09:38 PM   #32
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I do it every 5k. Mainly because of the hot weather, the spirited driving that is done in the car. (I dont do that stuff in this car that much )
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Old 07-10-2007, 09:46 PM   #33
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Every 7000 miles with Mobile 1...
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Old 07-10-2007, 09:55 PM   #34
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Redline suggest 10k but i do mine @ 7500. And even then is too filty for my taste. Foget BMW 15k b.s. They only care about low cost maintence and good public opinion. Same as "lifetime trans oil".
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Old 07-11-2007, 02:45 AM   #35
320de46m47
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Originally Posted by Emanuel View Post
...what? Can you try again, using sentences and decent grammar?
patronising
very funny

again....

Quote:
Originally Posted by Emanuel View Post
Hmm, typically the issue is that the question is poorly phrased, like in this thread. The real question is "how often should you change you oil?" Motor oil should be changed when its performance degrades, and it's been scientifically proven - numerous times, as in todd92's post - that BMW's recommended 15,000 mile interval is correct. At that point the oil's effectiveness is starting to degrade, but you've still got some leeway. Changing the oil and filter sooner derives no proven benefits. Not once has someone's oil analysis come back with results indicating the oil and filter should be changed sooner than factory interval. That is a fact; the rest is unsubstantiated opinion.


Quote:
Originally Posted by 320de46m47 View Post
wheres your proof? lol
unsubstantiated opinion....er what ? like yours you mean?
who the hell is todd?

i guess you cant answer mine?
btw im an english teacher ... this is the internet not school homework or perhaps we could look at your grammar shall we? a few mistakes there i see! lol

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Old 07-11-2007, 04:56 AM   #36
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After I had my inspection 2 done the computer said next oil service in something like 9500 miles. Doesn't this adjust according to your driving style? So if I did a lot of motorway driving the service interval would extend?

Quote:
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BMW says the E46 needs an oil change once every 15,000 miles, or once per year, whichever comes first. Though most people feel that's too long an interval (I do mine every 7500 miles), truth is everyone that's had an engine oil analysis done has found the oil is indeed fine at 15k. In sum, if it makes you uncomfortable, more frequent changes are cheap and won't hurt, but the factory interval is fine.

Syntec blend in synthetic and dino oil, and not as durable as 100% synthetic (Syntec).
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Old 07-11-2007, 01:13 PM   #37
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is it bad to keep on changin oil brands and grade? e.x 0w40 to 5w30 to 0w30 and soo on..
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Old 07-11-2007, 02:45 PM   #38
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I change every 5k. I do a 1200 mile "break in" oil change. Bimmer mag's Mike Miller has a good article on maintenance intervals published somewhere on this forum.
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Old 07-11-2007, 03:07 PM   #39
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I think 10,000 km oil change interval is more than safe for any climate and any driving style.
People who doubt this should sent their oil for analysis. There are oil analysis kits you can purchase and send your own, used oil, into the lab for testing. Lab will send you back the result. You will see that high quality synthetic oil has not changed much from the original after 10,000 km.
Or you can continue to spend your money and pollute the environment by changing perfectly good oil every 3,000 km.

http://www.wearcheck.com/services/te...g&testkit=MOB2

BTW, there are those who change their oil every 3,000 km, but when I ask them when was the last time they changed their coolant they answer “never”.
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Old 07-11-2007, 03:08 PM   #40
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the funny thing about this forum is it seems no one ever reads anything anyone else wrote, they just respond to the original post or a response to their post

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