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#3235665 - 01/03/14 09:26 AM Amsoil DEO 5w40, 8K, 04 Dodge 2500HD
dhellman12 Offline

Registered: 08/29/11
Posts: 218
Loc: Keller, TX
Owner previously maintained 5k mile OCI using Valvoline Premium Blue. Will suggest he run the 10K on this fill as indicated by Blackstone, and then push him to switch over to AME.

Make/Model: Cummins ISB 5.9L
Vehicle: 2004 Dodge 2500HD

OIL             DEO 5w40	
MILES ON UNIT   178,400		
SAMPLE TAKEN    12/3/13		

IRON		44		
LEAD		1		
TIN		1		
BORON		29		
CALCIUM		900		
ZINC		1222		
SUS @ 210F	81.2		
Visc @ 100C	15.83		
Flashpoint	450		
Fuel %		0.5		
Antifreeze %	0.0		
Water %		0.0		
Insolubles %	0.4		

Blackstone comments:
A mildly high viscosity was the only unusual find in this sample. It's still close to the 15W/40 range, and we're guessing the only reason it's up is that you used a little Lucas or something like that. Heat on the oil can cause the viscosity to thicken up, though we aren't seeing any of the other typical signs of heat (damage to the additives or lots of insolubles). And wear looks good. You're running your oil longer than average, and that's why wear is higher than average. The averages are based on ~6,700 miles on the oil. We'd change this fill at 10K.
04DMax 6.6L - Amsoil AME 15w40 202K
04Tahoe 5.3L - Amsoil ASL 5w30 216K
00WS6 5.7L - New to me 250K

#3235712 - 01/03/14 10:06 AM Re: Amsoil DEO 5w40, 8K, 04 Dodge 2500HD [Re: dhellman12]
Donald Online   content

Registered: 03/21/04
Posts: 18036
Loc: Upstate NY
I am not sure I would move up to 10K OCI without getting a TBN.

But it looks good otherwise.
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)

#3237507 - 01/04/14 06:48 PM Re: Amsoil DEO 5w40, 8K, 04 Dodge 2500HD [Re: dhellman12]
dnewton3 Offline

Registered: 05/14/07
Posts: 6414
Loc: Indianapolis, IN
That Fe seems high for the 8k miles. It's not at a point of condemnation, but it's high. One UOA is not worthy of any decisions yet. Run a couple more and see if the Fe is typical or an anomaly.

Do you have any UOA history under the VPB? Would be interesting to see how it ran with the other lube.
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 ...

#3237810 - 01/04/14 10:57 PM Re: Amsoil DEO 5w40, 8K, 04 Dodge 2500HD [Re: dhellman12]
dhellman12 Offline

Registered: 08/29/11
Posts: 218
Loc: Keller, TX
Donald, I'm not too worried about the TBN at 10K with this oil. Much more and I would agree with you.

dnewton, this was his first and only UOA on the truck. I agree, wish I had a little more background on the Fe. Hopefully I can get him to run a few more and see improvements in the metals and get the viscosity back down.
04DMax 6.6L - Amsoil AME 15w40 202K
04Tahoe 5.3L - Amsoil ASL 5w30 216K
00WS6 5.7L - New to me 250K