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2001 Dodge Ram 2500, Mobil Delvac 1300 Super, 27k miles #5161610 07/15/19 02:00 PM
Joined: Oct 2010
Posts: 7,722
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A_Harman Offline OP
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Mobil Delvac 1300 Super supplemented with Redline oil additive.

From Polaris:
Truck Odometer: 563036 mi
Miles on oil: 26700
9 quarts of makeup oil added.
Fleetguard LF16035 filter.

Polaris Comments:
Aluminum is at a MINOR LEVEL; ALUMINUM sources in ENGINES include pistons, block and
components (intake manifold, head, bearing caps), thrust bearings, main/rod bearing overlay or backing, alumina silica, or
contamination from grease. OXIDATION is at a MINOR level, which may be due to extended drain interval or high operating
temperature. Calcium is slightly high for this lubricant.

Aluminum at 11 ppm is the highest ever from this engine, but the VOA that I had done on 1300 Super showed 5 ppm Al, so maybe the engine only shed 6 ppm. Will monitor in future samples. Unlike Polaris' comments, the only Al in the Cummins engine is the pistons. All the bearings are Copper-Lead.
Iron wear rate is staying low with the Delvac 1300, but I cheated by supplementing it with 3 oz/gal of Redline additive. Other wear metals are very low.
TBN is very strong, so the drain interval could be extended.
Soot loading has gone up to 0.4%, but that is within the range of previous samples.
No water, no fuel dilution.
Engine still dripping or consuming about a quart per 3000 miles.

Polaris has also flagged Oxidation of 20 as Minor, but the VOA read 15, so it started out pretty high anyway. Viscosity did increase from 13.7 to 14.2, so there could be something going on. Half of my miles are towing, and I did have a couple of instances of hot running while towing grades, so the oil had been stressed. I had the cooling system flushed, and brushed and back-flushed the radiator, and that has taken care of the hot running. Given the current controversy between Shell and Mobil over the oxidation test of Delvac 1300, I thought this result was timely. At least it's a datapoint of one.

Dodge-UOA.PNG
Last edited by A_Harman; 07/15/19 02:01 PM.

2008 Dodge Ram 3500 diesel/G56
1985 Z51 Corvette track car 355/6-speed
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel/NV4500+GV
1972 GMC 1500 shortbed project truck 307/SM465
Re: 2001 Dodge Ram 2500, Mobil Delvac 1300 Super, 27k miles [Re: A_Harman] #5161747 07/15/19 04:19 PM
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Bighorn2500 Offline
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I’m impressed by the 500k+ mileage. I’m at 112k on a 2012, I have a long way to go.


2012 Ram 2500 SLT 6.7L Cummins 4x4
2018 Dodge Durango GT 3.6L 4x4
Re: 2001 Dodge Ram 2500, Mobil Delvac 1300 Super, 27k miles [Re: A_Harman] #5161810 07/15/19 05:21 PM
Joined: Jul 2016
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FlyNavyP3 Offline
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Your 24v seems to still be doing well with its new cylinder head. Always look forward to your samples. Thanks for sharing.


Luke
P-3C and P-8A Maritime Weapons and Tactics Instructor, Instructor Tactical Coordinator and Mission Commander
Re: 2001 Dodge Ram 2500, Mobil Delvac 1300 Super, 27k miles [Re: A_Harman] #5161939 07/15/19 07:39 PM
Joined: May 2013
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dustyroads Offline
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You mentioned that you had some instances of running hot before servicing the cooling system; maybe that's why you had some extra piston wear? Wouldn't that be reason enough or not really?

Nice presentation you provide. Thanks for keeping it going. thumbsup


2013 F150 XLT 5.0 4X4 122k miles
Re: 2001 Dodge Ram 2500, Mobil Delvac 1300 Super, 27k miles [Re: dustyroads] #5162211 07/16/19 05:46 AM
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A_Harman Offline OP
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Originally Posted by dustyroads
You mentioned that you had some instances of running hot before servicing the cooling system; maybe that's why you had some extra piston wear? Wouldn't that be reason enough or not really?



I don't think so. I had prior instances of hot running back in 2017, and they didn't cause a spike in Aluminum.


2008 Dodge Ram 3500 diesel/G56
1985 Z51 Corvette track car 355/6-speed
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel/NV4500+GV
1972 GMC 1500 shortbed project truck 307/SM465
Re: 2001 Dodge Ram 2500, Mobil Delvac 1300 Super, 27k miles [Re: A_Harman] #5162434 07/16/19 10:26 AM
Joined: May 2013
Posts: 1,238
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dustyroads Offline
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Well, it was just a thought. smile

The strong remaining TBN in your latest results is no surprise to me. I used Delvac 1300 for quite a stretch in the previous decade (the days of CI-4 into the early years of CJ-4) and it was always impressive in that regard.


2013 F150 XLT 5.0 4X4 122k miles
Re: 2001 Dodge Ram 2500, Mobil Delvac 1300 Super, 27k miles [Re: dustyroads] #5162470 07/16/19 11:16 AM
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A_Harman Offline OP
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Originally Posted by dustyroads
Well, it was just a thought. smile

The strong remaining TBN in your latest results is no surprise to me. I used Delvac 1300 for quite a stretch in the previous decade (the days of CI-4 into the early years of CJ-4) and it was always impressive in that regard.


I was kind of embarrassed about the remaining TBN, not wanting to dump perfectly good oil. I refilled with the same Delvac 1300 + Redline additive brew, so I won't be worried about wear metals or TBN until it comes time to put in the 5w40 for winter.


2008 Dodge Ram 3500 diesel/G56
1985 Z51 Corvette track car 355/6-speed
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel/NV4500+GV
1972 GMC 1500 shortbed project truck 307/SM465
Re: 2001 Dodge Ram 2500, Mobil Delvac 1300 Super, 27k miles [Re: A_Harman] #5162496 07/16/19 11:44 AM
Joined: May 2013
Posts: 1,238
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dustyroads Offline
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Yup, I've dumped a lot of good oil, too. I'm getting much more for my money these days and it feels good. Not a hint of trouble in doing so, either.


2013 F150 XLT 5.0 4X4 122k miles
Re: 2001 Dodge Ram 2500, Mobil Delvac 1300 Super, 27k miles [Re: A_Harman] #5167129 07/21/19 09:45 AM
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m37charlie Offline
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I think the RL additive increases your oxidation number a bit because it has esters. I also use it, 1 16 oz bottle in 7.5 gal sump.


05 Unimog U500/Unicat camper/Delvac 1 SHC ACEA E4/E5
09 BMW X5 35d/Delvac1 LE 5W30
88 Toyota OJ50LV OM314 motor D1 SHC
52 Dodge M37/Hercules diesel

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