[allan5oh]

http://www.oilanalysis.net/CommonFil...I=DABWIN_61966

32,000 miles on the oil (550 hours not 450).

I wonder if bronze(wrist pin bushings) will show up as copper. That's what happened to my engine 3 years ago when it blew, wrist pins.

I see 4 possible sources of copper:

- wrist pin bushings
- oil cooler (was replaced 3 years ago with engine rebuild)
- bearings(not likely)
- copper gasket for oil drain plug (where sample was taken)

[Kranky]

Bearings and thrust washers.

[allan5oh]

The problem with bearings is that there would be other associated wear, lead, etc...

Heres a good link I found:

http://www.oaitesting.com/g2047.pdf

[allan5oh]

I noticed that Chromium was high as well, but not "abnormal".

0.7 Vs. 1 which is "abnormal".

Chromium = rings

Seems as though the oil squirters aren't doing their job properly. This is what happened to my engine when it blew 3 years ago.

A question... is it possible the non-OEM filters are causing this?

[bob h]

Originally Posted by allan5oh

http://www.oilanalysis.net/CommonFiles/reports/RPT_WCA.asp?ReportPage=RPT_WCALVL1.asp&LabId=24237 21&WUI=DABWIN_61966

32,000 miles on the oil (550 hours not 450).

I wonder if bronze(wrist pin bushings) will show up as copper. That's what happened to my engine 3 years ago when it blew, wrist pins.

I see 4 possible sources of copper:

- wrist pin bushings
- oil cooler (was replaced 3 years ago with engine rebuild)
- bearings(not likely)
- copper gasket for oil drain plug (where sample was taken)

oil drain plug gasket ?!? you're pulling my leg, right?

[bob h]

Originally Posted by Splitshifter

Bearings and thrust washers.

thrusts are not copper

[allan5oh]

Originally Posted by bob h

oil drain plug gasket ?!? you're pulling my leg, right?

It is copper, but I really doubt it would do anything like this. If it was a couple huge slivers, I'd say yes.

So Bob, what do you think it is?

[emerlin]

Throwing pennies in your crankcse does not bring good luck!

[Maniac]

Cat brand anti-sieze is made with copper, but if you haven't ever used it that wouldn't be it either.

[bob h]

Originally Posted by allan5oh

It is copper, but I really doubt it would do anything like this. If it was a couple huge slivers, I'd say yes.

So Bob, what do you think it is?

make sure you take your samples from 1/2 way through the drain; not at the beginning or end... even this is a sloppy oil analysis collection