Amsoil AME 15W40, 22K, 04 Duramax 230K

Messages
263
Location
Texas
Make/Model: Isuzu 6.6 Duramax LLY Vehicle: 2004 Chevy 2500HD Oil was changed at the time of this sample.
Code
OIL             AME 15W40	AME 15W40	AME 15W40	AME 15W40	AME 15W40	AME 15W40	
MILES IN USE    22,236		19,187		13,556		19,740		12,406		20,617		
MILES ON UNIT   229,762		207,526		201,895		188,339		181,364		168,598		
SAMPLE TAKEN    11/5/18		6/4/17		1/2/17		1/2/16		8/9/15		8/9/14		
MAKE UP OIL	2		0		.75		1.25		.75		2		

ALUMINUM	3		2		2		3		2		2		
CHROMIUM	1		1		0		1		0		0		
IRON		23		23		15		24		15		16		
COPPER		4		5		3		7		4		4		
LEAD		4		4		2		5		3		2		
TIN		1		1		1		0		3		0		
MOLYBDENUM	0		0		0		1		1		1		
NICKEL		1		1		0		1		0		1		
MANGANESE	0		0		0		0		0		0		
SILVER		0		0		0		0		0		0		
TITANIUM	0		0		0		0		0		0		
POTASSIUM	2		3		2		4		3		7		
BORON		2		1		1		7		2		7		
SILICON		7		8		6		8		6		7		
SODIUM		9		7		6		8		5		5		
CALCIUM		3662		3537		3416		4075		3744		3729		
MAGNESIUM	16		12		12		13		12		19		
PHOSPHORUS	1210		1143		1113		1193		1137		1145		
ZINC		1388		1315		1240		1535		1338		1384		
BARIUM		0		0		0		0		0		1		
     
SUS @ 210F	76.2		72.7		74.5		78.6		79.9		72.6		
Visc @ 100C	14.57		13.66		14.12		15.17		15.5		13.63		
Flashpoint	460		440		460		430		445		450		
Fuel %		<0.5		<0.5		<0.5		<0.5		<0.5		<0.5		
Antifreeze %	0.0		0.0		0.0		0.0		0.0		0.0		
Water %		0.0		0.0		0.0		0.0		0.0		0.0		
Insolubles %	0.2		0.3		0.2		0.3		0.3		0.3		
TBN		6.0		6.2				7.3		7.6		6.9		
Blackstone Comments: This oil was in place longer than any other sample on the page, yet wear metals are at similar levels as before. In fact, they're almost identical to what showed up last time, so there's no reason to think your Duramax is having any mechanical issues. Instead, it's wearing well and it didn't mind the longer interval at all, so feel free to use this interval again. Or, if you want to go even longer, the TBN shows plenty of active additive left in the oil at 6.0, so feel free to try 24K miles or so next. The oil was fine (physically) and no contamination was found. Very nice!
 
Messages
2,005
Location
Jacksonville, FL
Man every time I see a Duramax UOA I'm always super impressed, cheap oil, high end oil, towing or not these engines always seem to deliver KILLER UOAs. The AMSOIL performed very well here, I really don't see any reason why 25k isn't doable in your application. Nice report, nice engine. Would love to see this engine on the opposite end of the spectrum with Super Tech or Traveler 15w40 to see how the numbers and cost compared to this high end oil. Cheers.
 

CT8

Messages
15,392
Location
Idaho
Amsoil AME 15W40, and the 10W=30/30 should be the flag ship of the Amsoil offerings. they have been around for ever and are excellent oils. TBN of 6 !
 
Messages
10,004
Location
Waco, TX
Originally Posted by FlyNavyP3
. Would love to see this engine on the opposite end of the spectrum with Super Tech or Traveler 15w40 to see how the numbers and cost compared to this high end oil.
I would bet the numbers don't change
 

dnewton3

Staff member
Messages
8,474
Location
Indianapolis, IN
You're averaging a bit over 1ppm/1k mi of Fe! The rest of the metals are so low they are just noise. Zero contamination to speak of. What's not to like? Would expect nothing less from a Dmax! Continue to extend the OCIs; clearly every reason to do so. Filtration? What FF used? Any BP? IIRC the early LLY engines used EGR, but very little of it, contrasted to later model LMMs and LMLs. That could be one reason the insolubles are low and the TBN is staying high. The oldest generation, the LB7, didn't have any EGR and had an open PCV system; talk about clean running!
 
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TXHunter

Thread starter
Messages
263
Location
Texas
dnewton - This one is the 2004.5 early Duramax, so it does have the EGR still. I thought about removing that when I installed an AFE mouthpiece (turbo inlet, installed @124k odometer) years ago but couldn't find a local tuner I trusted who would be able to turn off the check engine light/codes. I'm just using a basic hypertech handheld for now. At this point the UOA's look pretty good so I'm wondering if I should just leave things alone at this point. Diesel12 - Noack on the AME says 4.8%. I lose about a quart every 11-12K. I may have been closer to 1.75 ish and just rounded up. Using the Amsoil EA filter. I've used both the AME with Amsoil EA filters in this one since 2011. Before that I ran Valvoline PBE for the first 3yrs of owning the truck. While dnewton has convinced me on conventional for some of the tractors and ag equipment, I'm getting such good results on this engine I'm hesitant to make any changes. Even at 230K miles, this is still my daily driver plus travel to the deer lease pulling anything from small trailer with ATV to car hauler with the wife's 4dr Jeep Rubicon.
 
Messages
25,053
Location
ON, Canada eh?
Who would have thought you go this long on Amsoil with them having shady marketing practices and fake testing according to some members here. LOL Excellent report, thanks for posting. thumbsup
 
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Messages
362
Location
Canada
Don't confuse the issue. I don't recall anyone questioning whether Amsoil is a quality product. In general, their marketing and testing do leave a lot to be desired.
Originally Posted by StevieC
Who would have thought you go this long on Amsoil with them having shady marketing practices and fake testing according to some members here. LOL Excellent report, thanks for posting. thumbsup
 
Messages
25,053
Location
ON, Canada eh?
Originally Posted by Uregina09
Don't confuse the issue. I don't recall anyone questioning whether Amsoil is a quality product. In general, their marketing and testing do leave a lot to be desired.
Originally Posted by StevieC
Who would have thought you go this long on Amsoil with them having shady marketing practices and fake testing according to some members here. LOL Excellent report, thanks for posting. thumbsup
Oh there are folks here claiming it's not a product to be trusted and that there isn't supposed UOA's here claiming it can last as long as the OP's run. wink
 

dnewton3

Staff member
Messages
8,474
Location
Indianapolis, IN
Originally Posted by dhellman12
dnewton - This one is the 2004.5 early Duramax, so it does have the EGR still. I thought about removing that when I installed an AFE mouthpiece (turbo inlet, installed @124k odometer) years ago but couldn't find a local tuner I trusted who would be able to turn off the check engine light/codes. I'm just using a basic hypertech handheld for now. At this point the UOA's look pretty good so I'm wondering if I should just leave things alone at this point. Diesel12 - Noack on the AME says 4.8%. I lose about a quart every 11-12K. I may have been closer to 1.75 ish and just rounded up. Using the Amsoil EA filter. I've used both the AME with Amsoil EA filters in this one since 2011. Before that I ran Valvoline PBE for the first 3yrs of owning the truck. While dnewton has convinced me on conventional for some of the tractors and ag equipment, I'm getting such good results on this engine I'm hesitant to make any changes. Even at 230K miles, this is still my daily driver plus travel to the deer lease pulling anything from small trailer with ATV to car hauler with the wife's 4dr Jeep Rubicon.
The UOA results certainly show excellent wear rates. But again, that's typical of any Dmax. What your experiencing is that syn lubes (especially high quality PAOs like this example) are capable of OCIs much longer than conventional lubes. However, you really don't know how much "longer" because you're only viewing one end of the spectrum. Unless you were to run tests a dino lube, you'll not know what the baseline could be. The only thing that is certain here is that you're not anywhere near the OCI limit for this combination. The ONLY thing I would change would be the OCI; extend it out a bit at a time with each successive UOA. I'd leave the tuning, EGR and intake alone; they all are inputs to the output. Since we agree the current output is very desirable, don't change those. Just extend the OCI out until wear indicates a negative uptick in trending. At this point, you have not come close to reaching that point.
 
Messages
235
Location
Virginia, usa
Hate to bump this thread, But im curious if you have done any more samples... Thats very impressive 22k miles at 23ppm iron. Is cost of amsoil worth it...thats debatable. But Highend oil shows well here. But like Dnewton said we really dont know how this engine would run on delvac at 20k miles it may be just really good wearing engine. I think we can all Agree here maybe this engine is a unicorn in wear rates but 1ppm iron per 1k miles is most likely due to this oil and not just good engine, I personally have not seen dmax run numbers like that on dino.
 

dnewton3

Staff member
Messages
8,474
Location
Indianapolis, IN
Originally Posted by Shata
Hate to bump this thread, But im curious if you have done any more samples... Thats very impressive 22k miles at 23ppm iron. Is cost of amsoil worth it...thats debatable. But Highend oil shows well here. But like Dnewton said we really dont know how this engine would run on delvac at 20k miles it may be just really good wearing engine. I think we can all Agree here maybe this engine is a unicorn in wear rates but 1ppm iron per 1k miles is most likely due to this oil and not just good engine, I personally have not seen dmax run numbers like that on dino.
In my Dmax on 10w-30 dino: https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3519069/1 Routinely at/under 2ppm/1k miles, even when flogged hard pulling the RV in the Rockies (EGTs maxed out for minutes on end running uphill). while admittedly a bit off course, I can show you where 10k miles on dino PCMO related to 1ppm/1k miles. And I mean really inexpensive, Rural King brand dino PCMO: https://www.bobistheoilguy.com/foru...22/5/5w-20-ford-4-6l-engines-uoa-testing In fact, every single 10k mile OCi was at or below 1ppm/1k miles; it wasn't a fluke. It was ALL of them. Generally the wear rate is innate in the engine and the lube chosen really does not greatly affect the wear rates. the Dmax is one of the best wearing light-duty diesel engines, as the 4.6L mod motor is for gas applications.
 
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TXHunter

Thread starter
Messages
263
Location
Texas
No additional engine UOA's on this one yet. I'm planning to push the next one out to 24K, but it's likely to take me a couple years to get there. Will keep everyone posted.
 
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