Amsoil ASL 5w-30, 8152 miles, 2007 GMC 2500HD 6.0L

[johntab]

This is my first time posting here.

2007 GMC 2500HD 6.0L
Amsoil ASL 5w-30, Ea50 oil filter and Amsoil Eaa123 air filter installed
3/27/09 at 19627 miles

8/09/09 date of sample 27,812 miles on truck at time of sampling,
8,185 miles on sample

I drive primarily mostly highway miles during the week with minimal weekend use. If I do use the truck on the weekend it is for hauling firewood, mulch or other heavy loads.

Analysis provided by Oil Analyzers,Inc.

Results:

Wear Metals PPM
Iron 31
Chromium 0
Nickel 0
Aluminum 1
Copper 89
Lead 20
Tin 1
Cadmium 1
Silver 0
Vanadium 0

Contaminant Metals PPM
Silicon 10
Sodium 6
Potassium 0

Multi-source Metals PPM
Titanium 0
Molybdenum 59
Antimony 2
Manganese 1
Lithium 1
Boron 167 - highlighted

Additive Metals PPM
Magnesium 18
Calcium 3038
Barium 0
Phosphorous 637
Zinc 766

Fuel Soot & Water
vis 100c cs 10.6

tbn 5.12

I-R Oxida 37
I-R Nitra 25

Comments: Flagged additive levels are lower than expected for the lubricant that is identified. (This does not imply that the lubricant does not meet proper api, sae or iso classifications.

I called their corporate office to ask about the results. I was told that the wear numbers were low - good, the high copper was likely due to the fact that the engine oil cooler lines are copper, and that the phosphorous level could be from residual oil left over from the previous oil. TBN number good. They said I could keep the oil another and sample it at another 8000 mile interval.

 

[Billy_D]

I would dump the current fill and run Amsoil a second time.

 

[addyguy]

Still a bit of residual break-in there. Not bad in general. Visc. and TBN are rock-solid.

Future runs, oil should go 10-12k with ease.

 

[TheOak]

Originally Posted By: johntab
This is my first time posting here.

2007 GMC 2500HD 6.0L
Amsoil ASL 5w-30, Ea50 oil filter and Amsoil Eaa123 air filter installed
...


This is exactly what my 2007 GMC Yukon XL 5.3 vehicle specs out for.

Just purchased the vehicle though, so the the dealership changed the oil and it looks really really good, so I am going to get my use out of it first ...

Come spring I was going to make the swap to AMSOIL.

Anyway ... good to see the 5W30 AMSOIL holds up well.