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Old 07-04-2013, 02:02 AM   #1
important
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Default Pics of my magnetic drain plug.

Car has about 22k miles. This was the first magnetic plug. It was in the car for approximately 2500 miles.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
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Old 07-04-2013, 08:30 AM   #2
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We had "Gearbox Chip Detectors" in some of the aircraft I used to fly (UH-60) that also had a magnetic tip like your oil drain plug.

Looking at yours ... We would say: ... "It's ok, clean it off, it's just normal fuss"
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Old 07-04-2013, 08:59 AM   #3
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looks clean, I don't see any metal
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Old 07-04-2013, 09:01 AM   #4
Rich Mickol
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Quote:
Originally Posted by 01VETTECOP View Post
looks clean, I don't see any metal
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Old 07-04-2013, 09:08 AM   #5
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isn't most of LS2+LS3 motors aluminum. ????
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Old 07-04-2013, 09:20 AM   #6
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Quote:
Originally Posted by bugsas99 View Post

isn't most of LS2+LS3 motors aluminum. ????
True, the engine block and heads are aluminum alloy, but the rotating assembly (IE: crankshaft) is steel, along with the camshaft, roller valve lifters, oil pump rotating parts, timing chain, rocker arm needle bearings, piston rings, cylinder liners, as well as many other small moving parts.

.

Last edited by Turbo6TA; 07-04-2013 at 09:25 AM.
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Old 07-04-2013, 09:22 AM   #7
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Quote:
Originally Posted by bugsas99 View Post
isn't most of LS2+LS3 motors aluminum. ????
Cyl walls and rings are steel as is the crank and cam. I have seen lifters turn in the tray and fill the oil with iron. That is why built motors use link bar lifters. What you see on that mag. is normal ring wear.
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Old 07-04-2013, 09:25 AM   #8
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Quote:
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looks clean, I don't see any metal
Looks like there's a little sludge on the tip...with that said, I'm not going to worry about it. As much as I have read the forum, I have never read a thread about internal engine failures on the LS2 or LS3.
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Old 07-04-2013, 09:27 AM   #9
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Quote:
Originally Posted by 01VETTECOP View Post
looks clean, I don't see any metal
Oh ok. TBH, I wasnt sure if that oil residue contained any metal filings.

Last edited by important; 07-04-2013 at 09:34 AM.
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Old 07-04-2013, 09:33 AM   #10
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Quote:
Originally Posted by R&L's C6 View Post
Looks like there's a little sludge on the tip...with that said, I'm not going to worry about it. As much as I have read the forum, I have never read a thread about internal engine failures on the LS2 or LS3.
Sludge.

How should I correct? Anything to worry about?
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Old 07-04-2013, 09:36 AM   #11
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Quote:
Originally Posted by important View Post
Sludge.

How should I correct? Anything to worry about?
That's just my backyard mechanic, don't have a real clue, observation.....

Maybe someone with a lot more mechanical knowledge than I will chime in about it.
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Old 07-04-2013, 09:37 AM   #12
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Not really 'sludge' ... just a pasty combination of oil mixed in with very very fine metal particulates from the rod and main bearings along with all the other moving parts.

Perfectly normal.
_____________________________________

Here is an example as to what you DONT want to find on your magnetic drain plug:

Click the image to open in full size.

BTW ... those steel pins you see are from a failed rocker arm. There some of the needle bearings from the rocker arm

.

Last edited by Turbo6TA; 07-04-2013 at 09:46 AM.
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Old 07-04-2013, 10:02 AM   #13
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Quote:
Originally Posted by Turbo6TA View Post
Not really 'sludge' ... just a pasty combination of oil mixed in with very very fine metal particulates from the rod and main bearings along with all the other moving parts.

Perfectly normal.
_____________________________________

Here is an example as to what you DONT want to find on your magnetic drain plug:

Click the image to open in full size.

BTW ... those steel pins you see are from a failed rocker arm. There some of the needle bearings from the rocker arm.


Ok, I feel better.
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Old 07-04-2013, 12:20 PM   #14
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Looks normal; mine almost always have some VERY fine black residue.
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Old 07-04-2013, 02:13 PM   #15
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Looks normal; mine almost always have some VERY fine black residue.
Same here
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Old 07-04-2013, 03:41 PM   #16
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Quote:
Originally Posted by Turbo6TA View Post
Not really 'sludge' ... just a pasty combination of oil mixed in with very very fine metal particulates from the rod and main bearings along with all the other moving parts.

Perfectly normal.
_____________________________________

Here is an example as to what you DONT want to find on your magnetic drain plug:

Click the image to open in full size.

BTW ... those steel pins you see are from a failed rocker arm. There some of the needle bearings from the rocker arm

.
Looks good. I wouldn't worry about.
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Old 07-04-2013, 03:54 PM   #17
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Quote:
Originally Posted by Turbo6TA View Post
Not really 'sludge' ... just a pasty combination of oil mixed in with very very fine metal particulates from the rod and main bearings along with all the other moving parts.

Perfectly normal.
_____________________________________

Here is an example as to what you DONT want to find on your magnetic drain plug:

Click the image to open in full size.

BTW ... those steel pins you see are from a failed rocker arm. There some of the needle bearings from the rocker arm

.
I actually had that happen once on my Boosted C5 after running in very hard for a hill country run, noticed a tapping sound, took it to my mechanic and he said lifter or rocker.

The easiest to check was to pull the oil plug and presto needle bearings were on the tip, found one bad rocker on the drivers side
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Old 07-04-2013, 04:44 PM   #18
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Just for reference; are you using Mobil 1? I'm getting ready to change my C5 before I take my next road trip......I'll post a pic if it looks any different, but I doubt it will.

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Old 07-04-2013, 05:39 PM   #19
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The proper way is to clean the tip with spray solvent / carb cleaner . So all the oil and carbon is rinsed off , wipe the chip plug on a white tissue or cloth . If it looks or feels like crushed glass or larger pieces its bad . If its like paste gray / black graphite no worries . Bigger machines , bigger chips are allowed . View under the microscope if required .
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Old 07-04-2013, 05:40 PM   #20
Allan
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GM part# & cost for the Magnetic Plug . . . please
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Old 07-04-2013, 05:40 PM
 
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