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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 06-04-2009, 04:40 AM   #61
ngng
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i'd take everything on the internets with a grain of salt. lol at fools wanting to buy each others used oil
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Old 06-04-2009, 04:55 AM   #62
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This is the internet fool. Why are you here?
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Old 06-04-2009, 05:14 AM   #63
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i'd take everything on the internets with a grain of salt. lol at fools wanting to buy each others used oil
I actually would use somebody's mobil 1 0w-40 if they only used for 3000 miles and didn't contaminate it in the oil change process, I actually would use it. Especially in my e30 or 1994 toyota landcruiser.
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Old 06-04-2009, 05:51 AM   #64
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my magic number is 7500 miles
thats where i try to do it.
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Old 06-04-2009, 06:26 AM   #65
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there are many other articles to be read
http://www.google.com/notebook/publi...S6IwoQt4GviOsi

the one OP pointed out was written by people at Ford and ConocoPhilips.
there are other oil drain articles, written by people at Pennzoil, etc.

although we would want to think their research is objective and unbiased, it is usually written in the best interest of their business.
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Old 06-04-2009, 07:00 AM   #66
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i will be doing mine on the wagon soon...the interesting thing...i drive so little that everytime I change the oil it is still clear gold instead of black
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Old 06-04-2009, 07:36 AM   #67
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You can stop arguing on behalf of this article like you wrote it yourself.
You can wait your 15k and change your oil, I can change mine at 5, it doesn't matter.
Again, this has been debated for ages. So here's my counter, as well as all your counters.

http://lmgtfy.com/?q=How+often+shoul...ange+my+oil%3F
LOL. "Change you oil every 3000 miles? What is this, the 1970's ?"

7500 is the first one, and most popular on in the list also. Nice!

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AGREED. 5K is a good number.
With 5k you have the initial 3k miles "break in period" followed by 2k miles of added protection. Over 50k miles thish would result in 30k "break in" in miles and 20k miles with 10-15% less wear. 3:2.

With 10k miles oil changes this ratio shifts to 15k "break in miles" and 35k miles with 10-15% lower wear. 3:7

I'll take option two please. The longer my engine can receive the benefits of added lubricity, the better.



The oil still has plenty of life left at 5400 miles. Complete waste to change it. Better for your engine to leave it in, instead of replacing it and going through those 3k initial miles again.
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Old 06-04-2009, 07:42 AM   #68
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A technical paper by the society of automotive engineers > your opinion.
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Old 06-04-2009, 08:58 AM   #69
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My car runs better after I wash and wax it.
Understandable, reduced air drag. That's worth at least +15hp and there's no need to get an oil analysis that says Nice or change oil.
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Old 06-04-2009, 09:05 AM   #70
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This article is not about E46 BMWs specifically. Thats why i'm doing my own personal oil analyses. An analysis can provide me with information about my car specifically, and E46s in general to a certain extent.
The oil analysis people are out there to make money. I think their reports are suspect and geared towards generating more profit. So I would not put too much faith in those. As can be seen, all their reports always state when you should give them more money.
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Old 06-04-2009, 09:15 AM   #71
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Agreed, I'd be interested as well to see how long the oil would be usable.
I estimate the oil would be perfectly useable at 45k miles, provided the air filtration system is not compromised through using a high flow (ie, low filtration) filter. There's an additional safety margin of at least 10% beyond that. We can infer this by looking at BMW's CPO policy - they would continue to honour the warranty even if the car hasn't had an oil change for 49.999k miles since the last time.

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Old 06-04-2009, 09:17 AM   #72
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This is the internet fool. Why are you here?
be nice, we are special, not like the others
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Old 06-04-2009, 09:21 AM   #73
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The oil analysis people are out there to make money. I think their reports are suspect and geared towards generating more profit. So I would not put too much faith in those. As can be seen, all their reports always state when you should give them more money.
Yes yes and yes, I think the same, it is cheeper and more fun to just do a change and take the time to look the engine and tranny over
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Old 06-04-2009, 09:25 AM   #74
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The next time i own fleet vehicles in Las Vegas, I will change the oil every 12,000 miles

I doubt the results obtained from fleet vehicles can be applied to every car out there. I do not run my M3 like a stereotypical "fleet vehicle".

Last edited by The Jerk; 06-04-2009 at 10:09 AM.
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Old 06-04-2009, 09:32 AM   #75
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I estimate the oil would be perfectly useable at 45k miles, provided the air filtration system is not compromised through using a high flow (ie, low filtration) filter. There's an additional safety margin of at least 10% beyond that. We can infer this by looking at BMW's CPO policy - they would continue to honour the warranty even if the car hasn't had an oil change for 49.999k miles since the last time.
CPO policy clearly states BMW will not EVEN cpo a car that has not had documented oil service without a tear down of valve for inspection of sludge
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Old 06-04-2009, 10:06 AM   #76
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This is a great informational thread. Keep the personal attacks, subtle jabs, and pointless comments out of here!

Tim
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Old 06-04-2009, 11:11 AM   #77
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input requested:

http://forum.e46fanatics.com/showthread.php?t=680159
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Old 06-04-2009, 02:14 PM   #78
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This is a great informational thread. Keep the personal attacks, subtle jabs, and pointless comments out of here!

Tim
+1
Just change the oil when you feel like it & it
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I just can't imagine the world without the smell of burned gas coming out of a well tuned engine:drool:
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nice try on the sig you tard. unfortunately, when you click the link you see the actual quote.

you are on a roll with the FAIL tonight. :lmao:
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Old 06-04-2009, 05:37 PM   #79
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I estimate the oil would be perfectly useable at 45k miles, provided the air filtration system is not compromised through using a high flow (ie, low filtration) filter. There's an additional safety margin of at least 10% beyond that. We can infer this by looking at BMW's CPO policy - they would continue to honour the warranty even if the car hasn't had an oil change for 49.999k miles since the last time.
1. Estimates aren't very good when you are putting a $4000 engine on the line. You should be careful with your engine, and definitely very careful about giving advice to others.
2. What are your qualifications for providing this information in the first place?Any degree in automotive, petroleum, or chemical engineering? Something remotely relevant? Unless you have a respect and knowledgeable background on the subject, your claims aren't truly valid. For that exact reason is why Royal Purple had to retract many of their oil claims; they were running off customer's claims and old standards and test.
3. How do you plan on measuring the total base number of your oil that tells you when the protective additives have run out?
4. I don't mean to attack you or anything and I do respect your quest for finding the useable life of an oil in a BMW engine.
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Old 06-04-2009, 05:47 PM   #80
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i dont drive my car...i dont change the oil
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