Brown Thing In Oil?? - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
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#1 (permalink) Old 02-28-2005, 12:22 PM
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Hi all

I check my oil yesterday (it was OK) and I decided (for no real reason) to open the engine cap (the hole where you put oil in).

There was a brown substance under the cap itself (i cleaned it) and around the hole. I looked inside and nothing was wrong there...

The brown substance has a butter texture....

Any idea what's that?? Prestone in oil?? Whats wrong?

Thanks!
Henri

EDIT : Oil change was made 3000 km ago (1.5 - 2k miles) with Synthetic Oil (not the 1st time I put syntec in it).
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#2 (permalink) Old 02-28-2005, 12:31 PM
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Looks to me like the classic sign of head gasket failure.. Coolant is gettin in there and mixing with the oil

Complete mod list and pics:

My 1993 325i
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#3 (permalink) Old 02-28-2005, 12:59 PM
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Damn... Is this supposed to happen on a 1998 BMW with less than 85 000km (53k miles) on it!?? Even my old 1991 Sentra with 200 000km on it has never done this!!

Is this something really expensive to fix??

Thanks!
H.


Edit: What would go wrong on my car if that problem was present? (ex: bad trottle, ...?)
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#4 (permalink) Old 02-28-2005, 01:07 PM
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Hi, i used to have the same problem on my first eva car which was a ford fiesta rubbish i kno!, but neways, it had a brown buttery like substance round the top of the oil cap! and if i cleaned it off more would appear as i drove it!, it was suggested to me that it was water and or air getting into the engine which created this substance! the car did have a massive oil leak! so would explain where the water was getting in! SO THIS MAY BE THE CASE ON YOUR BMW! i would suggest taking it to a reputable garage and have them check all of your oil gaskets and seals! hope this helps!
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#5 (permalink) Old 02-28-2005, 01:18 PM
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I bought an oil cap from eBay..... May this be the thing that let air go in??

I'll check this tonight, I can put back original oil cap....!!!
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#6 (permalink) Old 02-28-2005, 04:40 PM
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yes this could be the problem if the air and moisture is gettin in round the cap! is best to have it checked tho as the yellow gunk does not jus build up round the oil cap! it also build up all inside the engine! am sure can be flushed out wit an engine flush but u must ahyve the leak fixed or it will just create more! can ya help me out on my problems in the e36 section :P
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#7 (permalink) Old 02-28-2005, 10:19 PM
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it is most likesly condensation. i am a "lube boy" at the local shop and i see it alllllll the time. mostly on the new hemi's and jeeps so i wouldnt go crazy over it.
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#8 (permalink) Old 03-01-2005, 06:34 AM
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Quote:
Originally posted by 323ic@Mar 1 2005, 05:19 AM
it is most likesly condensation. i am a "lube boy" at the local shop and i see it alllllll the time. mostly on the new hemi's and jeeps so i wouldnt go crazy over it.
[snapback]301479[/snapback]
This is absolutely correct, more likely to be condensation, looking at your location and if you do short journeys most of the time, the engine never gets to full operating temperature which enables the moisture in the oil to evaporate completely, the only thing you have to be aware of is that if it gets really bad it can start to block up vac pipes and the like.

Best regards David
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#9 (permalink) Old 03-01-2005, 08:55 AM
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make sure the cap is torqued correctly (18 ft-lb, 25Nm)

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#10 (permalink) Old 03-01-2005, 10:11 AM
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Thank you all for your replies

Someone talked about an engine flush... is there any products you would suggest to do that? Or products you tried and are bad? :P

I presume I drain out my oil (next oil change) then I put a product in engine then let it run a few minutes, drain out again then put back new oil and filter?!

Thanks

Have a nice day
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#11 (permalink) Old 03-01-2005, 10:46 AM
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no... jsut drain your oil, and with the plug still open pour about a quart through the engine. Plug it up and put the new oil in.

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#12 (permalink) Old 03-02-2005, 10:10 PM
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Good news! I went to a BMW specialist shop today, the guy checked my "butter" thing and told me that it was only moisture (it's cold and wet 'round here in Montreal during winter). So he told me to drive the car at least one hour on highway to make this thing evaporate. I did, and... everything went fine, no more brown substance in engine!

I'm so happy I didn't need an engine repair !!$$!

Thank you for all your replies

Have fun!

H.
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#13 (permalink) Old 03-03-2005, 01:38 AM
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Quote:
Originally posted by Boxbrownie+Mar 1 2005, 01:34 PM--><div class='quotetop'>QUOTE(Boxbrownie @ Mar 1 2005, 01:34 PM)</div><div class='quotemain'><!--QuoteBegin-323ic@Mar 1 2005, 05:19 AM
it is most likesly condensation. i am a "lube boy" at the local shop and i see it alllllll the time. mostly on the new hemi's and jeeps so i wouldnt go crazy over it.
[snapback]301479[/snapback]
This is absolutely correct, more likely to be condensation, looking at your location and if you do short journeys most of the time, the engine never gets to full operating temperature which enables the moisture in the oil to evaporate completely, the only thing you have to be aware of is that if it gets really bad it can start to block up vac pipes and the like.

Best regards David
[snapback]301628[/snapback]
[/b][/quote]


Glad to hear the BMW specialists know as much as we do around your way!

Best regards David
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