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Amsoil SVG 75W90, 50K, 04 Duramax 196K #4187090
08/26/16 01:53 PM
08/26/16 01:53 PM
Joined: Aug 2011
Posts: 256
Texas
dhellman12 Offline OP
dhellman12  Offline OP

Joined: Aug 2011
Posts: 256
Texas
Pretty happy with this one overall. Will extend it to 60K on the next run.

Make/Model: GM Rear Differential
Vehicle: 2004 Chevy 2500HD


Code:
OIL             SVG 75w90	SVG 75w90	VAL Syn 75W90	
MILES IN USE    50,070		39,780		29,976		
MILES ON UNIT   196,200		146,130		106,350		
SAMPLE TAKEN    8/16/16		7/3/13		10/20/11		
MAKE UP OIL	0		0		0		

ALUMINUM	2		0		2		
CHROMIUM	0		0		1		
IRON		77		99		170		
COPPER		0		0		1		
LEAD		1		0		1		
TIN		0		0		0		
MOLYBDENUM	0		0		0		
NICKEL		0		2		2		
MANGANESE	2		2		4		
SILVER		0		0		0		
TITANIUM	0		0		0		
POTASSIUM	1		0		0		
BORON		96		125		305		
SILICON		22		15		4		
SODIUM		3		3		4		
CALCIUM		5		5		10
MAGNESIUM	1		0		2
PHOSPHORUS	829		893		2169
ZINC		7		10		17
BARIUM		0		0		0		
CADMIUM				0
VANADIUM			0
ANTIMONY			0
LITHIUM				0
     
SUS @ 210F	86.0				76.2		
Visc @ 100C	17.01		16.9		14.56		
Flashpoint	410				375		
Water %		0.0		<.1%		0.0		
Insolubles %	0.1				0.3		
TAN		2.5		2.03
Oxidation			45
Nitration			4


Oil Analysis Vendor Comments:
The viscosity was a little thicker than expected in this sample, but if that was a problem for the differential, it certainly doesn't seem like it. Wear metals are lower than last time, depsite the longer run -- who can complain about that? No water turned up and insolubles read at just 0.1%. The TAN read 2.5. A longer interval should be no problem. Try about 60K miles for next time. Nice report!


05 Kawasaki BF750 - 284hrs
12 Jeep 3.8L - Amsoil ASL 5w30 74K
04 DMax 6.6L - Amsoil AME 15w40 238K
00 WS6 5.7L - Amsoil ASL 5w30 256K
Re: Amsoil SVG 75W90, 50K, 04 Duramax 196K [Re: dhellman12] #4187126
08/26/16 02:24 PM
08/26/16 02:24 PM
Joined: Sep 2010
Posts: 7,822
Houston, TX
2015_PSD Offline
2015_PSD  Offline

Joined: Sep 2010
Posts: 7,822
Houston, TX
With those numbers, I would go to 100K with Amsoil. Interesting to me is the Amsoil was used for 67% more miles than the Valvoline, yet the iron reading was 54% lower with the Amsoil. IMHO, Amsoil gear oil is arguably the best on the market.


2018 Mercedes Benz AMG GLC43 3.0L Bi-Turbo [Castrol Edge 0W-40 & MB (Purflux) filter]
2018 Mercedes Benz C300 2.0L Turbo [Pennzoil Platinum Euro 0W-40 & Mann filter]
Re: Amsoil SVG 75W90, 50K, 04 Duramax 196K [Re: dhellman12] #4187140
08/26/16 02:43 PM
08/26/16 02:43 PM
Joined: Nov 2015
Posts: 1,462
KingCake Offline
KingCake  Offline

Joined: Nov 2015
Posts: 1,462
Vehicle mileage is source of your iron, not the valvoline.

Re: Amsoil SVG 75W90, 50K, 04 Duramax 196K [Re: 2015_PSD] #4187155
08/26/16 02:55 PM
08/26/16 02:55 PM
Joined: May 2006
Posts: 765
Portland, Oregon
Joshua_Skinner Offline
Joshua_Skinner  Offline

Joined: May 2006
Posts: 765
Portland, Oregon
No knowing what was done before the Valvoline fill makes those results worthless. If that was the first change of the diff oil then it's still washing out original wear particles.

Originally Posted By: 2015_PSD
With those numbers, I would go to 100K with Amsoil. Interesting to me is the Amsoil was used for 67% more miles than the Valvoline, yet the iron reading was 54% lower with the Amsoil. IMHO, Amsoil gear oil is arguably the best on the market.


2015 Nissan Frontier S King Cab, 2.5L, 5MT
Pennzoil Platinum 5W-30 in the crankcase. Red Line in the gearboxes.
Re: Amsoil SVG 75W90, 50K, 04 Duramax 196K [Re: KingCake] #4187215
08/26/16 04:26 PM
08/26/16 04:26 PM
Joined: Sep 2010
Posts: 7,822
Houston, TX
2015_PSD Offline
2015_PSD  Offline

Joined: Sep 2010
Posts: 7,822
Houston, TX
Originally Posted By: KingCake
Vehicle mileage is source of your iron, not the valvoline.
How so? The Valvoline was used for 29,976 miles (not 106,350) and the Amsoil was used for 50,070 miles. What are you seeing that I am not?


2018 Mercedes Benz AMG GLC43 3.0L Bi-Turbo [Castrol Edge 0W-40 & MB (Purflux) filter]
2018 Mercedes Benz C300 2.0L Turbo [Pennzoil Platinum Euro 0W-40 & Mann filter]
Re: Amsoil SVG 75W90, 50K, 04 Duramax 196K [Re: Joshua_Skinner] #4187220
08/26/16 04:31 PM
08/26/16 04:31 PM
Joined: Sep 2010
Posts: 7,822
Houston, TX
2015_PSD Offline
2015_PSD  Offline

Joined: Sep 2010
Posts: 7,822
Houston, TX
Originally Posted By: Joshua_Skinner
No knowing what was done before the Valvoline fill makes those results worthless. If that was the first change of the diff oil then it's still washing out original wear particles.
Originally Posted By: 2015_PSD
With those numbers, I would go to 100K with Amsoil. Interesting to me is the Amsoil was used for 67% more miles than the Valvoline, yet the iron reading was 54% lower with the Amsoil. IMHO, Amsoil gear oil is arguably the best on the market.
Still washing out original wear particles after two OCs? While anything is possible, I doubt there were still original particles being washed out. The results from my retired 2010 F-150 show a similar pattern of less metal as time goes on. As you say, we cannot tell for certain, but it does seem strange.


2018 Mercedes Benz AMG GLC43 3.0L Bi-Turbo [Castrol Edge 0W-40 & MB (Purflux) filter]
2018 Mercedes Benz C300 2.0L Turbo [Pennzoil Platinum Euro 0W-40 & Mann filter]
Re: Amsoil SVG 75W90, 50K, 04 Duramax 196K [Re: 2015_PSD] #4187251
08/26/16 05:40 PM
08/26/16 05:40 PM
Joined: Aug 2011
Posts: 256
Texas
dhellman12 Offline OP
dhellman12  Offline OP

Joined: Aug 2011
Posts: 256
Texas
Bad assumptions on the Valvoline and mileage. That was my 3rd fill with Valvoline Syn gear oil, bought the truck at 46K and had all fluids changed. Did another OCI at 76K. This was the 3rd and first time I did an analysis.


05 Kawasaki BF750 - 284hrs
12 Jeep 3.8L - Amsoil ASL 5w30 74K
04 DMax 6.6L - Amsoil AME 15w40 238K
00 WS6 5.7L - Amsoil ASL 5w30 256K
Re: Amsoil SVG 75W90, 50K, 04 Duramax 196K [Re: dhellman12] #4187308
08/26/16 07:02 PM
08/26/16 07:02 PM
Joined: Sep 2010
Posts: 7,822
Houston, TX
2015_PSD Offline
2015_PSD  Offline

Joined: Sep 2010
Posts: 7,822
Houston, TX
Originally Posted By: dhellman12
Bad assumptions on the Valvoline and mileage. That was my 3rd fill with Valvoline Syn gear oil, bought the truck at 46K and had all fluids changed. Did another OCI at 76K. This was the 3rd and first time I did an analysis.
In what way? Did you run the Valvoline for 29,976 total miles or no? If yes, then I am saying it seems strange for the Valvoline OC to generate 170ppm of iron but the Amsoil which was used for 50,070 and only produced 77ppm of iron. Since the OC that generated 170ppm of iron was the third OC on the axle, then it was not residual iron from the OEM fill. I fully understand that nothing absolute can be ascertained, but it makes one question if the Amsoil did a better job and if the numbers above are correct, then this is still true--the Amsoil was used for 67% more miles than the Valvoline, yet the iron reading was 54% lower with the Amsoil versus Valvoline.


2018 Mercedes Benz AMG GLC43 3.0L Bi-Turbo [Castrol Edge 0W-40 & MB (Purflux) filter]
2018 Mercedes Benz C300 2.0L Turbo [Pennzoil Platinum Euro 0W-40 & Mann filter]
Re: Amsoil SVG 75W90, 50K, 04 Duramax 196K [Re: 2015_PSD] #4187391
08/26/16 09:15 PM
08/26/16 09:15 PM
Joined: Aug 2011
Posts: 256
Texas
dhellman12 Offline OP
dhellman12  Offline OP

Joined: Aug 2011
Posts: 256
Texas
Your posts were spot on. I was highlighting the previous posters regarding the 'worthless' first uoa, and claims that the lead must have been from high mileage.


05 Kawasaki BF750 - 284hrs
12 Jeep 3.8L - Amsoil ASL 5w30 74K
04 DMax 6.6L - Amsoil AME 15w40 238K
00 WS6 5.7L - Amsoil ASL 5w30 256K
Re: Amsoil SVG 75W90, 50K, 04 Duramax 196K [Re: dhellman12] #4187679
08/27/16 09:36 AM
08/27/16 09:36 AM
Joined: Sep 2010
Posts: 7,822
Houston, TX
2015_PSD Offline
2015_PSD  Offline

Joined: Sep 2010
Posts: 7,822
Houston, TX
Originally Posted By: dhellman12
Your posts were spot on. I was highlighting the previous posters regarding the 'worthless' first uoa, and claims that the lead must have been from high mileage.
Gotcha--thanks for the clarification.


2018 Mercedes Benz AMG GLC43 3.0L Bi-Turbo [Castrol Edge 0W-40 & MB (Purflux) filter]
2018 Mercedes Benz C300 2.0L Turbo [Pennzoil Platinum Euro 0W-40 & Mann filter]
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