RotellaT6, 5812oci, 75084mi, Subaru Forester XT

[SCHM1AN]

This is my wife's Forester which is typically driven 12 miles each way on her commute. A few highway trips but nothing note-worthy. What concerns me is the silver in the sample- does anybody know if Subaru uses silver in their engines? I've run a few samples before on my Subarus and have never had it pop up. What gives?

I'm also going to keep an eye on the chromium to make sure it's not a piston ring on it's way out like I suspected on my Legacy

Code:
Rotella T6



Calcium 1050

Zinc 1188

Phosphorus 1019

Magnesium 1025

Boron 21

Molybdenum 61

Iron 16

Copper 3

Sodium 7

Silicon 12

Aluminum 5

Chromium 2

Potassium 3

Nickel 1

Lead 0

Tin 0

Manganese 0

Silver 8

Titanium 0

Barium 0



SUS @210F 69.0

cST @ 100C 12.69

Flashpoint 385

Mi on Oil 5812

Mi on Unit 75084

 

[Wilhelm_D]

Originally Posted By: SCHM1AN
This is my wife's Forester which is typically driven 12 miles each way on her commute. A few highway trips but nothing note-worthy. What concerns me is the silver in the sample- does anybody know if Subaru uses silver in their engines? I've run a few samples before on my Subarus and have never had it pop up. What gives?

These may help you out:

Sources of Wear Metals in Oil Analysis

Oil Analysis Tests

 

[bluesubie]

Some have said (SubLGT, you out there?) that they' ve seen high silver prior to a turbo failure. I wouldn't be too concerned at this point, but would start to get a little more concerned if it doesn't drop on the next uoa.

I've also read where Subaru has stopped using lead in the bearing material, but don't know of they're using silver instead and don't remember the year they switched.

-Dennis

 

[Rand]

headgasket leak? IIRC rotella T has no potassium or sodium in it?

Possible impending turbo failure for the Silver?


edit: checked some VOA's seems like

the sodium is normal and the potassium should be
so really not showing much of a problem(if any) with those 2 elements.

 

[Eddie]

I thought Subaru XT recomended a 5w30 oil viscosity.

 

[SCHM1AN]

They do recommend a 5w30, but running a thicker oil shouldn't be of any detriment to my engine's longevity.

Assuming this is a main bearing is there anything I can do to slow the wear down? At what point do I need to be concerned? 20ppm?

 

[bluesubie]

Originally Posted By: Eddie
I thought Subaru XT recomended a 5w30 oil viscosity.

5W-30 is preferred for fuel economy and 5W-40 is allowed down to -4F.

It appears that this Foz may be affected by the 08/09 Subaru turbo stop sale TSB.

-Dennis