Amsoil AME 15W40, 21K, 04 Duramax

[TXHunter]

Submitted this oil sample right at a year hoping that I could squeeze 25K out of this fill. Based on the results now I'm wondering if I shouldn't be extending this longer? I will probably still replace the Amsoil oil filter at 25K, if not oil & filter.

Make/Model: Isuzu 6.6 Duramax LLY
Vehicle: 2004 Chevy 2500HD
Code:


OIL AME 15w40 AME 15w40 AME 15w40 AME 15w40 VPBE 5w40 VPBE 5w40

MILES IN USE 21,779 19,779 12,006 9,006 8,038 6,000

MILES ON UNIT 145,003 123,224 115,451 112,451 102,862 100,824

SAMPLE TAKEN 6/13/13 6/13/12 3/1/12 1/2/12 9/6/11 8/26/11

MAKE UP OIL 2.5 2.5 0 0 0 0



IRON 14 16 11 9 7 6

CHROMIUM 0 1 0 0 0 0

NICKEL 0 1 0 1 0 0

ALUMINUM 2 2 2 2 2 1

COPPER 3 4 2 2 3 2

LEAD 2 2 1 2 6 1

TIN 0 1 0 2 0 0

CADMIUM 0

SILVER 0 0 0 0 0 0

VANADIUM 0

SILICON 9 8 7 7 8 7

SODIUM 5 6 5 5 6 7

POTASSIUM 4 4 0 0 0 0

TITANIUM 0 0 0 0 0 0

MOLYBDENUM 0 6 7 8 42 43

ANTIMONY 0

MANGANESE 0 0 0 0 0 0

LITHIUM 0

BORON 2 10 9 10 34 40

MAGNESIUM 31 197 213 234 1190 1319

CALCIUM 3888 3604 3153 3334 820 849

BARIUM 0 0 0 0 0 0

PHOSPHORUS 1252 1262 1132 1241 1071 1191

ZINC 1500 1323 1226 1369 1300 1417



Fuel %
Soot
Insolubles % 0.3 0.2 0.2 0.1 0.2

Water %
SUS @ 210F 74.6 73.0 71.3 71.7 71.9

Visc @ 100C 14.6 14.14 13.73 13.29 13.40 13.44

TBN 7.0 5.8 8.7

Oxidation 53

Nitration 10

Flashpoint 430 425 435 400 420

Antifreeze % 0.0 0.0 0.0 0.0 0.0



Oil Analysis Vendor Comments:
Flagged data (Magnesium) does not indicate an immediate need for maintenance action. Continue to observe the trend and monitor equipment and fluid conditions. Magnesium is slightly high for this lubricant. Oil is suitable for continued use. Observe for trends in future tests.

Keep in mind this was the first sample done through OAI, all previous submissions were done with Blackstone.

 

[dnewton3]

Quote:
Oil is suitable for continued use. Observe for trends in future tests.


Could not agree more.

The Dmax is very easy on oil, so no surprise here. Everything else is fine; low contamination, good vis, TBN strong, low ox (relative to presumed starting ox) and nitration low.

Extend, extend, extend.

 

[901Memphis]

Wow that's crazy good. Did you top off with the same oil or use something else?

 

[TXHunter]

I did top off with the same oil. The 2.5QT total add was split between 3 different adds within the 10-15K range. No oil has been added/needed since the 15K mark.

This was also the first run on the Amsoil EA air filter, all previous runs were with K&N. Doesn't look like much difference in silicon...

 

[901Memphis]

Interesting note about the air filter. Are you going to use the kn after you run the Amsoil air filter out?

 

[TXHunter]

I haven't really decided at that point. I'm about to clean the Amsoil air filter at the 25K mark and want to see how the silicon numbers trend on the next round. I was expecting to see a slight improvement...

 

[SteveSRT8]

Originally Posted By: dnewton3
Quote:
Oil is suitable for continued use. Observe for trends in future tests.


Could not agree more.

The Dmax is very easy on oil, so no surprise here. Everything else is fine; low contamination, good vis, TBN strong, low ox (relative to presumed starting ox) and nitration low.

Extend, extend, extend.


Almost a pity to throw that oil out.

Now you know why my employees fight over my old oil!

 

[Norm Olt]

I'm stumped: Magnesium is flagged (as "slightly high") but it is lower (@31) than any previous run for this same oil?

Is there really that much difference between OAI & Blackstone?

Cheers!

 

[Sunnyinhollister]

I was curious as to why the magnesium was trending down? Is this just from the previuos run?

 

[TXHunter]

I think the primary difference is that Blackstone was aware of the VPBE fill that used a high amount of magnesium which is slowly dwindling with the continued use of the Amsoil AME. OAI has only seen the most recent run of which they flagged the magnesium amount as something they don't normally see in AME. They didn't have the luxury of seeing the previous fills and trends...