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E46 M3 (2001-2006)

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  #1  
Old 01-03-2014, 05:01 PM
noorcaliii noorcaliii is offline
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Location: American Canyon, California
 
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Mein Auto: 2003 E46 M3
New to Bimmerfest, confused about burning oil

Hello everyone,

My name is noor and I'm new to Bimmerfest.

Just for the record, mommy and daddy did not but my car. I saved up the money, took me two years, but the E46 M3 is worth every penny.

It was a hunt, but I finally managed to buy my 2003 Alpine White M3 a few months ago. Has aftermarket rims on at the moment, just waiting to buy some tires for the original 19s.

I just had a question, besides the fact that the oil (10W-60) is exclusive to only Bmw dealerships, (and maybe Mercedes) I am continuously adding oil to my car. The oil light comes on about once every month. And my big question is that, is it normal for my car to be burning this much oil? (1 Liter a month)

Please comment if you know it if you have the same issue! Thanks again guysClick image for larger version

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  #2  
Old 01-08-2014, 07:46 AM
89gtcs 89gtcs is offline
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Location: Raleigh, NC
 
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Mein Auto: 2011 Mustang GT
First off, congrats! That's a beautiful car.

Do you drive aggressively on a regular basis? When you downshift, do you rev match each time? Are there any noticeable leaks anywhere/is your oil pressure normal? From what I've heard, some oil consumption is normal for these engines. Also, what is your oil change interval and what kind of oil do you use? Castrol TWS 10W-60 seems to be the most highly recommended oil.

Lastly, have you considered running an oil separator/catch can? I don't know if this is common (my background is Ford/GM engines) but I run a catch can on my 5.0 mustang engine and it collects between 1/4 and 1/2 inch of oil per oil change depending on my driving.
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  #3  
Old 01-21-2014, 09:55 AM
JKRIT JKRIT is offline
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Noor: Ten year old BMWs tend to have oil leaks from various places, particularly the valve cover gasket and the oil filter housing gasket. The VCG leaks are pretty obvious and may leak onto the exhaust manifold so you smell it too. The OFHG leaks are much harder to spot on the side of the block behind the alternator. Check everywhere for oil leaks before you presume that the oil is being "burned."
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  #4  
Old 01-21-2014, 02:54 PM
noorcaliii noorcaliii is offline
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Location: American Canyon, California
 
Join Date: Jan 2014
Posts: 4
Mein Auto: 2003 E46 M3
@89GTCS Thanks a lot I appreciate it! And yes I do drive a bit aggressively; however, I don't think that would burn one liter every two weeks. Also, I do tend to drive normal too, for the sake of the maintenance and safety. So I don't think it could be that but maybe an oil leak?


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  #5  
Old 01-21-2014, 02:55 PM
noorcaliii noorcaliii is offline
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Location: American Canyon, California
 
Join Date: Jan 2014
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Mein Auto: 2003 E46 M3
Quote:
Originally Posted by JKRIT View Post
Noor: Ten year old BMWs tend to have oil leaks from various places, particularly the valve cover gasket and the oil filter housing gasket. The VCG leaks are pretty obvious and make leak onto the exhaust manifold so you smell it too. The OFHG leaks are much harder to spot on the side of the block behind the alternator. Check everywhere for oil leaks before you presume that the oil is being "burned."
Thanks a lot. I'm thinking it could be an oil leak... BMWs are notorious for their oil leaks and more for how secretive they could be lol. Anyways, I'll look into it but the only smell I get is the clutch when I put it into fast shift mode. Other than that, everything seems to check out...


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  #6  
Old 01-21-2014, 06:20 PM
kardboard kardboard is offline
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Location: Texas
 
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Mein Auto: E46 M3
Sounds like a leak.

Just to be a little more sure... don't drive aggressively. Drive like a granny, rev match as smoothly as possible (or if you have an smg keep it on automatic) for two weeks and see if the cars consumption of oil is consistent to what you were experiencing before.

I just picked up a manual transmission M3 and thankfully it isn't eating oil like you are reporting. Mine also has 115k miles.
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