Rotella T 10W-30 3729 Miles 2008 Subaru Legacy GT

[edhackett]

Here's the latest on my Legacy GT. The Rotella is proving to be a solid choice for this engine. The copper is still a bit high, but I suspect that is an interaction between the Rotella chemistry and the big, copper oil cooler. The fuel is a bit high likely because the warm-up for this change was all at idle while I changed the coolant and P/S fluid.

Code:
Report Date 18-MAY-09

Lab Blackstone

Make Subaru

Model Legacy GT

Year 2008

Engine 2.5L Turbo F4

Miles On Veh. 30,016

Oil Brand Shell

Oil Series Rotella T

Oil SAE J300 10W-30

API SX CJ-4/SM

Miles on Oil 3729 ~2 months in service

***Elements***

Aluminum Al 3

Chromium Cr 0

Iron Fe 5

Copper Cu 16

Lead Pb 1

Tin Sn 1

Molybdenum Mo 2

Nickel 0

Manganese Mn 0

Silver Ag 0

Titanium Ti 0

Potassium K 6

Boron B 24

Silicon Si 14

Sodium Na 4

Calcium Ca 2252

Magnesium Mg 8

Phosporus P 1107

Zinc Zn 1501

cST @ 100 C 10.9

SUS @ 210 F 61.3

Flashpoint 375

Fuel % TR

Antifreeze % 0.0

Water % 0.0

Insolubles % 0.3

TBN N/A

Additives None

***Filters used***

Air Filter Subaru OEM

Oil Filter Subaru OEM

Location Reno, NV USA


Ed

 

[dave1251]

This UOA looks a little boring. Which is a good thing.

 

[calvin1]

Where do you get the Rotella 10w30? Here in Chicagoland I can only find it at Menards (big box hardware, think HD) and that only in the winter.

 

[addyguy]

For CJ-4/SM Rotella, that's a LOT of zinc.

Shouldn't it be around 1100-1200?

 

[edhackett]

I pick it up at the local Shell distributor. It doesn't cost any more than GTX, QS, Valvoline, etc. at Kragen/Pep Boys.

Yes, that zinc number looks to be a bit high. This is what I got last time on he same date code batch: P 1245, Zn 1338. I think we are seeing lab errors in the higher numbers. If any of the labs doing these cheap analysis are within 10%, I'd be surprised.

Ed

 

[bluesubie]

Nice car, nice oil, nice uoa.

You should change the listed oil filter to: Tokyo Roki, fka OEM.

I presume that "big, copper oil cooler" refers to the oem cooler.

-Dennis

 

[daman]

Originally Posted By: addyguy
For CJ-4/SM Rotella, that's a LOT of zinc.

Shouldn't it be around 1100-1200?

x2...nice numbers!!!