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YOUR RESEARCHmetal shavings in the sump pan
Leading reported evidence
Run magnetic drain plug
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Performed · outcome unconfirmed · Original poster
The shavings are not magnetic as I run a magnetic drain plug.
Leading evidence: 'Run magnetic drain plug' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean copper colored piece enough' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
See if you can clean a copper colored piece enough to remove the copper color & reveal the true color.
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I didn't take a picture but, they were copper in color. Not the aluminum most see from the porsche manufacture. I dropped the pan to view the pick up screen bc I have been getting low oil pressure after the engine reachs opperating temps. The screen did have a decent amount of of the copper shavings on it.
Define "low oil pressure"??
Oil light on at 3k rpm, 900 rpm?
Gauge fluctuates from "0" to 60 while driving?
Any magnetic shavings?
http://www.blackstone-labs.com/newsletters.php?ID=42
Without pictures, measurements, and perhaps whether the parts are ferrous, this thread is completely useless. It's akin to emailing this to your doctor "Some red liquid came out of me. What do you think is wrong?"
Hard to say, but I can't think of any other source for copper + low oil pressure.
If the rod bolts got stretched at some point, or if the oil pressure is causing damage to the bearings.
Coloration could be from heat or staining. I have never seen aluminum take on any other color besides black hues before. This is why I am describing it as copper.
Did it appear the material was blocking the pickup enough to limit oil flow? It does not look that way in the picture but maybe did when you 1st droped the sump plate? Worn bearings lowers oil pressure. See if you can clean a copper colored piece enough to remove the copper color & reveal the true color.
Well that sure ain't bearing or rod wear. Looks more like machining bits from the original build, or possible pieces of a brass metal gasket. Do any of the oil pumps use that type gasket, I wonder?
It was a replacement engine from Porsche. It isn't the original engine.
I'll try to soak them in a solution and get some more pictures.
From talking to Audi techs they indicated to me it doesn't take much blockage at the pickup to starve the pump. I'd say it was covering a 1/6th to a 1/5th of the pickup. It was more so around the edge line which seems to be tappered which would create a decent amount of blockage. A lot of it was at the bottom of the pan. I'm only getting low oil pressure when it reaches opperating temps. Low meaning under 0 at idle but, then raises to 1 under throttle. Oil light does not come on untill at a stop at idle. So I'm thinking once the oil reaches temps the pieces flow around a lot more freely and cause the blockage to increase untill the oil cools and they resettle at the bottom.
Many have said in the past that you cannot diagnose anything if that is the first time you remove the oil pan as many things are there since the engine build.
Only way is to put it back, drive a little and remove it again to see if more debris are found again.
If the oil pump intake screen was getting blocked by engine oil sump debris at hot idle enough to trigger a low oil pressure light at idle at higher engine speeds the low oil pressure light wouldn't come on before the engine went boom.
You need to be sure the oil pressure gage you are relying upon is ok along with the sender/sensor.
If the oil pressure sensor/sender is bad this could result in a spurious oil pressure warning light and of course a wrong oil pressure reading. Likely this is on purpose because better to have the failing sensor/sender send a spurious low oil pressure warning when the oil pressure is really ok rather than keep on signaling 4.5 or 5 or even 6.0 bar when the oil pressure sensor/sender is failing.
Anyhow, while engine oil sumps can hold a surprising amount of metal debris -- a lot of it from when the engine was first started at the factory -- if (big if) the low oil pressure is a real condition and not arising from some sensor/sender malfunction, that your engine has low oil pressure at idle suggests the metal debris, the "copper" shavings, is bearing material and the engine is in need of some serious attention, internally, and without delay.
I'd not run the engine any more than you have to as you confirm the true oil pressure situation and then if you find the oil pressure truly low that's it.
Engine off until it gets fired up after a bottom end rebuild.
