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#4630123 - 01/10/18 08:52 AM 2006 Duramax LBZ, 10k mi, Delvac1 CK-4
DNVDMAX Offline


Registered: 11/20/07
Posts: 249
Loc: Richmond, VA
I've been meaning to post this for a while. Ran my tow tune during last 5,000 miles. Towed occasionally, 5k to 10k lbs.

Code:
MI/HR on Oil			10,019			5,314			15,592			10,746			21,466			13,893			
MI/HR on Unit			153,066			148,361			143,047			127,455			106,671			85,205			
Sample Date			12/16/17		08/05/17		05/03/17		08/10/14		01/13/14		03/05/12		
Oil				Delvac1 ESP CK-4	Delvac1 ESP CK-4	M1 TDT			Rotella T5 		Rotella T6 5w-40	Rotella T6 5w-40			
				5W-40			5W-40			5W-40			10w-30
Make Up Oil Added		1 qts			0 qts			0 qts			0 qts			.5 qts (Filter)		0 qts			

ALUMINUM			3			3			4			4			6			6			
CHROMIUM			<1			<1			2			<1			<1			1			
IRON				38			23			47			49			24			34			
COPPER				2			1			4			3			4			14			
LEAD				2			<1			4			2			1			0		
TIN				2			3			3			2			2			3			
MOLYBDENUM			45			36			2			3			67			62			
NICKEL				<1			<1			4			<1			<1			0		
MANGANESE			Not Tested		Not Tested		Not Tested		Not Tested		Not Tested		1		
SILVER				<1			<1			<1			<1			<1			0			
TITANIUM			<1			<1			<1			<1			<1			0			
POTASSIUM			2			2			<1			<1			<5			7			
BORON				54			76			43			15			23			38			
SILICON				9			7			13			11			6			8			
SODIUM				11			1			8			5			10			4			
CALCIUM				1262			1212			1354			2517			860			970			
MAGNESIUM			961			828			990			50			1171			1258			
PHOSPHORUS			1148			981			1185			1091			1070			1098			
ZINC				1386			1207			1385			1254			1312			1309			
BARIUM				<1			<1			<1			<1			0			

										
SUS Viscosity @ 210F		Not Tested		Not Tested		Not Tested		Not Tested		Not Tested		77.3			
cSt Viscosity @ 100C		13.2			13.3			17.0			12.7			15.0			14.84			
Flashpoint in F		Not Tested		Not Tested		Not Tested		Not Tested		Not Tested		420			
Fuel %				<1			<1			<1			<1			<1			<0.5			
Antifreeze %			No			No			No			No			No			0.0			
Water %				<0.05			<0.05			<0.05			<0.05			0.07			0.0			
Soot %				0.4			0.6			1.6			0.5			0.3			0.1			
TBN				8.0			8.8			7.0			6.1			7.2			8.3

_________________________
06 GMC 2500HD DMAX EFILIVE M1 TDT 5w-40 FRAM Ultra
91 GMC K1500 5.7L 5w-30 Quaker State HM Bosch D+

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#4630521 - 01/10/18 01:40 PM Re: 2006 Duramax LBZ, 10k mi, Delvac1 CK-4 [Re: DNVDMAX]
DoubleWasp Offline


Registered: 05/21/12
Posts: 5067
Loc: Fort Lauderdale, FL
My uneducated observation is that your iron likes to show itself since you switched to T5. Your iron doubled in half the OCI.

Has there been any other changes, such as duty cycle, filter choice, or usage since then around that time?
_________________________
07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
07 Ram 3500 4x4 / Cummins 6.7 /DBL7349
17 Maserati GranTurismo Cabrio

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#4630828 - 01/10/18 07:21 PM Re: 2006 Duramax LBZ, 10k mi, Delvac1 CK-4 [Re: DNVDMAX]
Garak Offline


Registered: 12/05/09
Posts: 23331
Loc: Regina, Saskatchewan, Canada
Looks good. I see the magnesium is still there, and you had plenty reserve TBN.
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Wix 57356
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#4631110 - 01/11/18 07:18 AM Re: 2006 Duramax LBZ, 10k mi, Delvac1 CK-4 [Re: DoubleWasp]
DNVDMAX Offline


Registered: 11/20/07
Posts: 249
Loc: Richmond, VA
No real change on the T5 run. Although she was running a tad warm on I-5 in Cali on that run pulling a cargo trailer from Georgia to Cali to Alaska. Mainly used Baldwin filters until recently I experimented with a Wix XP on the previous run and a Fram Ultra on this UOA.
_________________________
06 GMC 2500HD DMAX EFILIVE M1 TDT 5w-40 FRAM Ultra
91 GMC K1500 5.7L 5w-30 Quaker State HM Bosch D+

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#4632127 - 01/12/18 05:58 AM Re: 2006 Duramax LBZ, 10k mi, Delvac1 CK-4 [Re: DNVDMAX]
dnewton3 Offline



Registered: 05/14/07
Posts: 7109
Loc: Indianapolis, IN
Not a bad run. Within normal wear expectations. That's the good news. But, it's a Dmax; "normal" is normal - that's what we expect. What we see here is totally within "normalcy".
I realize this is your UOA in your thread, but I offer this for consideration ...


https://bobistheoilguy.com/forums/ubbthreads.php/topics/4527295#Post4527295
As you can see, I am getting slightly lower wear than you, when Fe wear-rate is averaged.
In contrast, I run dino Rotella 10w-30. All while flogging my 2006 Dmax in heavy towing this last UOA. I assure you you're not running your rig any harder than I did in my last UOA; I was running at/near max EGTs for most all the trip, fighting headwinds pulling my RV for hours on end.


Are you getting "better" results using an expensive syn?
It depends on how you define "better" ....

- You certainly are not getting less wear, that's for sure.
(your last three Mobil syn oil UOAs have given you 3ppm/1k mi, 4ppm/1k mi, 4ppm/1k mi)
(my last four Rotella dino UOAs have given me 2ppm/1k mi, 2ppm/1k mi, 2ppm/1k mi, 3ppm/1k mi)
- You certainly don't need a syn for "cold" starts in most areas.
(these are HPCR injection, with intake grid heaters and glow plugs; starting generally isn't an issue if your batteries are in good shape. My Dmax has started as low as -17F, on dino 10w-30)


You're probably spending 3x more money than I am; what is 3x "better" in your UOAs?

The Dmax engines simply don't care what is in the crankcase, as long as it's an appropriate lube. Base stocks don't matter. Vis does not matter. Brand does not matter. Your UOAs, and others, and mine, just continue to convince me that the Dmax is one of the best wearing light-duty engines made. And they don't need anything special to return excellent results. Syns have not shown any statistical advantage of wear reduction in a Dmax. The lube system design of the Dmax is what controls wear rates; not the base stock or brand of oil.

Yes- this is a challenge to you. It's not meant to be a taunt, but a friendly challenge for you to think outside the synthetic box.










Edited by dnewton3 (01/12/18 06:24 AM)
_________________________
Conventionals vs. Synthetics isn't about which is "better"; it's about which lasts longer, while assuring safe operation, in relation to cost. Any product can be over or under utilized. The same applies to filters.
Make an informed decision; first consider your operating conditions, next determine your maintenance plan, and then pick your lube and filter. Don't do it the other way around ...

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#4632806 - 01/12/18 06:37 PM Re: 2006 Duramax LBZ, 10k mi, Delvac1 CK-4 [Re: DNVDMAX]
A_Harman Offline


Registered: 10/01/10
Posts: 6672
Loc: Michigan
You seem to have had a winner with the Rotella T6 when you went 21k miles and only had 24 ppm of Fe. That seems so good, maybe it was an error at the lab. I think you should do another OCI with RT6.

I'm jealous of your oil consumption. I wish my diesel was that good.
_________________________
1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck

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#4633078 - 01/12/18 10:41 PM Re: 2006 Duramax LBZ, 10k mi, Delvac1 CK-4 [Re: DNVDMAX]
DNVDMAX Offline


Registered: 11/20/07
Posts: 249
Loc: Richmond, VA
DN3, valid statement on the lack of ROI with synthetics in my application. This is my wifes daily driver and she does jack rabbit starts in the morning, 13..0x sec 1/4 mile times on occasion, and does not let the turbo cool before shutting her down after a hard pull. I guess the synthetics just give me peace of mind so I sleep well at night. I dont think I would run synthetics if I wasnt continuously finding it on sale for $10/gal or less. I have 2.5 gals of T5 in 10w-30 and 15w-40. I will likely run one of these in my next OCI.
_________________________
06 GMC 2500HD DMAX EFILIVE M1 TDT 5w-40 FRAM Ultra
91 GMC K1500 5.7L 5w-30 Quaker State HM Bosch D+

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