Amsoil Sig 5w30, 13K, 05 Chevy Tahoe

[TXHunter]

2nd ever UOA sample. Oil was not dumped at time of sample, but was after receiving results. This is the 2nd GM 5.3L with high silicon, and can't seem to figure out why? This one is still running a K&N air filter in the stock air box.

Make/Model: GM 5.3L V-8
Vehicle: 2005 Chevy Tahoe

Code:


OIL Amsoil 5w30 Amsoil 5w30

MILES IN USE 13,06 9,466

MILES ON UNIT 139K 120K

SAMPLE TAKEN 4/5/13 3/16/12

MAKE UP OIL 1 0



ALUMINUM 8 5

CHROMIUM 1 1

IRON 48 35

COPPER 32 28

LEAD 29 13

TIN 4 3

MOLYBDENUM 150 141

NICKEL 2 2

MANGANESE 1 1

SILVER 0 0

TITANIUM 0 0

POTASSIUM 0 0

BORON 33 30

SILICON 53 47

SODIUM 66 181

CALCIUM 3675 3135

MAGNESIUM 18 40

PHOSPHORUS 709 636

ZINC 838 748

BARIUM 0 0



SUS @ 210F 66.7 60.7

Visc @ 100C 12.07 10.41

Flashpoint 440 430

Fuel %
Antifreeze % 0.0 0.0

Water % 0.0 0.0

Insolubles % 0.4 0.3

 

[badtlc]

unless you are driving in a very clean air area, k&n is going to give you higher silicon levels. Until you try a paper filter, you are not going to know for sure.

 

[LargeCarManX2]

Originally Posted By: badtlc
unless you are driving in a very clean air area, k&n is going to give you higher silicon levels. Until you try a paper filter, you are not going to know for sure.


I agree!

 

[Doog]

Originally Posted By: LargeCarManX2
Originally Posted By: badtlc
unless you are driving in a very clean air area, k&n is going to give you higher silicon levels. Until you try a paper filter, you are not going to know for sure.


I agree!


+3 hold the K&N up to the light.

 

[buster]

Not bad at all. GM Engines often show higher wear, but for the miles on the oil, these are good numbers overall. Could be improved though by ditching the K&N most likely.

 

[Kuato]

I've noticed high silicon in my UOAs also and am switching from K&N to Amsoil EA air filters. They're good for 100k miles (with a vacuum cleaning every 25k)

 

[ChemicallyChargd]

And you do remember to clean it every 10k, the k&n is a two-stage filter, the media wouldn't be much without the oil that you spray on, it attracts and gives something for dirt to stick to, think of the media as merely a skeleton to hold the oil in a thin layer to trap small particles, and of course the skeleton keeps bugs and junk out. But still has its limits I don't mind the slightly higher silicone in trade for the extra air, as the engine will still likely outlive the car, if loved.
-srv

 

[badtlc]

Originally Posted By: ChemicallyChargd
And you do remember to clean it every 10k, the k&n is a two-stage filter, the media wouldn't be much without the oil that you spray on, it attracts and gives something for dirt to stick to, think of the media as merely a skeleton to hold the oil in a thin layer to trap small particles, and of course the skeleton keeps bugs and junk out. But still has its limits I don't mind the slightly higher silicone in trade for the extra air, as the engine will still likely outlive the car, if loved.
-srv


You can get filters with the flow of a K&N but the filtration of paper in AEM and AFE. Why would anyone run the K&N?

Also, Amsoil EAA should provide better than paper filtration with close to K&N flow rates.

 

[walk23]

Ditch the K&N ! Unless you've modified your vehicle their filters are just marketing hype.

 

[147_Grain]

Originally Posted By: badtlc
Why would anyone run the K&N?

Amsoil EAA should provide better than paper filtration with close to K&N flow rates.

 

[TXHunter]

On the 04 Tahoe I switched in the middle of an oil run from K&N to a Wix and started noticing an improvement on silicon numbers (K&N was 46ppm @ 9K, Wix was 38ppm @ 10K). I'll be doing another UOA on it next month after 8K miles on the new oil (~17K on the Wix) to see how those compare to the previous numbers with K&N.

On my Duramax I swapped the K&N in favor of the Amsoil EAA and should have numbers for that in June. I already had what I believe were really good silicon numbers (8ppm @ 20K) so I don't expect a significant change with the EAA.

I've noticed a slight drop in gas mileage on the Tahoe with the air filter but nothing I would call drastic (0.2 MPG). I believe there was also a dip in the Duramax dropping the K&N for the EAA but I swapped out the turbo intake inlet so it's no longer apples to apples.