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07-07-2018, 02:57 PM | #1 |
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Metal flakes in the filter
HI everyone,
This forum is a great source of everything related to E9X M3 platform and I appreciate all the information that is out there. I've been a long-time reader and was always able to find an answer to my questions. This time, however, I can use some help. During my last two oil changes I have noticed some particles/flakes in the oil filter. The most recent one really got me concerned. I've noticed (what I think is) valve cover paint, some metallic non-magnetic shavings and metallic, magnetic metal flakes. To address the elephant in the room - I was planning to do the rod bearings this winter. But am now debating if I should get this done asap. The car: - 2011 E90 - 38K miles - 2nd owner (since 28K miles) - no mods that I'm aware of - oil changes every 3-4K miles (due to track time and age). - Summer car, around 5K miles a year - 5-6 track days a year - last oil was used for 3K miles (used for 1 year, 4 track days) The question now is whether I need to do a rod bearing job asap or if I should prepare for a large bill (main bearings... ? ) deansbimmer ///M Power-Belgium SYT_Shadow I'd appreciate if you can share your thoughts on how bad this is or if I'm over-thinking this... Scharbag I remember you had experienced something similar. Did replacing rod bearings help with the particles in the filter? Here's some pictures of the oil filter: Overview: Paint? Some pieces are quite sizeable Metal shavings (non-magnetic) Metal flakes (magnetic). Magnet is inside the glove Last edited by bgp001; 07-07-2018 at 03:56 PM.. Reason: updated one picture |
07-07-2018, 04:13 PM | #4 |
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Thanks! That's somewhat reassuring. Hope it's not as bad as I think...
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07-07-2018, 05:23 PM | #6 |
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Yeah . It can happen that we catch some small debris in the oil filter . But I never saw paint flakes in the oil filter .
*If* these are paint flakes , they probably come from under your oil cap . Perhaps from the moment when you tighten your oil cap . I saw pics on here from valve covers and sometimes the paint crumbles . The situation looks like bubbles under the valve cover paint . As for your non-magnetic picture . This can be lead , because lead is not magnetic . Your last picture worries me the most . Because it's shiny and yellow and makes me think on copper shavings . Advice : 1- If you still have the oil from your oil change , I would send an oil sample to Blackstone . 2- Meanwhile I wouldn't drive the car to avoid further damage, seen as a precaution.Don't drive the car ! 3- If a bearing replacement is necessary , I would replace them ASAP . 4- Main bearings ? That's hard to tell , because infrequent . I saw them only a few times on here . With your 38K on it , the chance is very small .
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07-07-2018, 05:31 PM | #7 |
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No sarcasm needed. Change before it's too late.
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07-07-2018, 06:44 PM | #8 | |||
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Thanks for your insight!
Quote:
Quote:
Do you think it'll still make sense to do an oil analysis? Quote:
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07-07-2018, 07:06 PM | #9 | |
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Quote:
If you still have the oil from your oil change .In your situation, I would absolutely send an oil sample to Blackstone .
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07-07-2018, 10:04 PM | #10 |
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So I did a bit more digging into my filter...
Turns out most of the metal flakes are indeed magnetic. They were just embedded into the pleats and magnet couldn't pick them up. Pretty much every pleat has some amount of metal shavings. Here's are few better pictures: The largest pieces that I found This in particular makes me very sad Magnet Paint (it breaks quite easily) |
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07-07-2018, 11:15 PM | #11 |
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07-07-2018, 11:28 PM | #12 |
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I don't think so, I thought they were forged steel alloy. Below is commentary regarding the S54 engine but I think this likely applies for the S65 as well.
".........To understand why the rod bearing fails on this engine you first have to understand how the bearings on the crankshaft work. The bearing is a wearable surface, i.e. softer than the material of the crankshaft and the rod itself which are both, typically 4340 steel, one of the hardest/strongest steels available." Doesn't look good for the OP. https://www.langracing.com/finding-a...aring-failure/ |
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07-08-2018, 07:38 AM | #13 | |
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07-08-2018, 08:19 AM | #14 | |
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07-08-2018, 10:14 AM | #16 |
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Mains are the same material as the rod bearings .
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07-08-2018, 05:54 PM | #18 | |
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Quick update: Today I strained the oil through a paint strainer. Didn't find anything too alarming, just a few metal specks (magnetic), much smaller than the ones in pictures. |
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07-08-2018, 06:48 PM | #20 |
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If they are all magnetic, then the chunks must be from something else though (I'm assuming the steel backing of the bearing can't be exposed or chipped away without preventing engine running).
Last edited by Bartledoo; 07-09-2018 at 08:43 AM.. |
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07-08-2018, 06:51 PM | #21 |
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OK Let us/me know ...
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07-09-2018, 01:13 AM | #22 |
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Don't wait for it, just do it.
I am also scheduled to do RB in August.
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