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The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 05-26-2019, 12:15 PM   #1
MichaelT1981
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Blackstone Oil Analysis

Does anyone have an opinion of my oil analysis from Blackstone?
Attached Files
File Type: pdf 04 M3-190425.pdf (1.06 MB, 64 views)

Last edited by MichaelT1981; 05-26-2019 at 01:00 PM.
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Old 05-26-2019, 12:35 PM   #2
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Quote:
Originally Posted by MichaelT1981 View Post
Does anyone have an opinion of my first oil analysis?
2 things.

1) blank out your address in the client section before attaching or we will have an M3 party at your place.

2) http://www.m3forum.net/m3forum/showthread.php?t=431107

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Old 05-27-2019, 09:41 PM   #3
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Copper makes it look like it's time for rod bearings.
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Old 05-27-2019, 09:48 PM   #4
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I was under the impression you had to have lead too.
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Old 05-28-2019, 10:27 AM   #5
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If the lead is all gone and you're into the copper...
Besides bearings, what other source of copper is there?
Rod bearings are just the first to go, if engine has 100k+ I'd do mains while yours there.

Last edited by ewcmr2; 05-28-2019 at 10:33 AM. Reason: Correcting autocorrect
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Old 05-29-2019, 02:24 AM   #6
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Mains dont need to be done on these engines at 100k miles. Plenty of guys race these cars and run them hard close to 200k miles and upon disassembly, mains look fine.

Worry about rod bearings, vanos and subframe.


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Old 06-11-2019, 07:08 PM   #7
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Good idea to check the crankshaft end play while you are in there. Main bearings do not wear like the rod bearings do but the thrust bearing is subject to wear from the clutch.
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Old 06-11-2019, 10:15 PM   #8
MichaelT1981
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At 40,000 I'm not concerned about the rods or the mains, just trying to figure out where the wear might be coming from. From everything I've read if its the rod bearings you have lead along with the copper.
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Old 06-11-2019, 11:11 PM   #9
mrgizmo04
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Unless lead has already worn through

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Old 06-12-2019, 04:09 AM   #10
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Regardless of odometer miles, if you're seeing copper I would start by checking the crankshaft end float. Pry the crankshaft back and forth with a dial indicator positioned to get a reading in thousandths of an inch. If over the high limit the trust bearing will be worn out and must be replaced. If OK I would then pull the pan and start checking rod bearings. There is no other source for copper than the bearings. If you continue to drive the car without checking into the cause you risk losing the crankshaft and possibly a connecting rod or two.
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Old 06-12-2019, 04:39 AM   #11
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Ok, thanks for the info guys.
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Old 06-12-2019, 10:37 AM   #12
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It looks like blackstone feels as though you have no cause for concern, slightly elevated levels of copper could be a lot of things. I'd do what they say and not worry and keep an eye on it.
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