Filter Cut Open: WRX w/2-3ppm Silver

[thescreensavers]

Even my first UOA Ive had 1ppm of silver,

I am now at 62k miles, last UOA wast 50k

I cut my oil filter using tin snips from the gasket area.

I tested the particles with a Hard Drive magnet they are non magnetic so ...

What was sitting on the bottom, I have not cut open the actual filter.

 

[tojo1968]

If I read your UOA history correct,you went from a recommended 5w-30 to 5w-40 and the silver went up?

 

[CT8]

Is it hard? piston material or block if aluminum and soft bearing material.

 

[SoNic67]

Bearing material - on WRX probably tin.
Are you doing extended oil changes?

 

[thescreensavers]

Originally Posted By: tojo1968
If I read your UOA history correct,you went from a recommended 5w-30 to 5w-40 and the silver went up?


Yep seems that way but its coincidence, the 1ppm I never worried about but it should read zero, the oil isn't the issue, many people run this oil without issue.

Originally Posted By: CT8
Is it hard? piston material or block if aluminum and soft bearing material.


Unsure exactly, next week going to get tweezers and pick as much out as I can from the filter and try to identify what material it is.

Originally Posted By: SoNic67
Bearing material - on WRX probably tin.
Are you doing extended oil changes?


Bearing is silver in WRX after 09 something like that, Nope lve been doing ~3750 now to see if the silver goes away but I haven't redone a UOA since I feel like I was wasting money getting the same results back.