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#4463044 - 07/18/17 04:01 PM Pot stirring what's the best oil for heavy duty...
Sledge_Hammer Offline


Registered: 07/18/17
Posts: 18
Loc: OK
Hello everyone, new member. Did a search, can't really find what I'm asking on, so here she goes......

We have a fleet of dump trucks. They range from C-12 Cats, 3406E Cats, N14 Cummins. No Detriots yet, but that will prolly change fairly soon. All older trucks, so no emissions.

Engines that we haven't rebuilt we are running Rotella T6

Engines we've had redone we are running Mobile 1 Turbo Diesel

Don't mean to 'stir' the pot, but as the heading implies, what's the 'best' oil to be using?

Thanks

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#4463069 - 07/18/17 04:33 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
L_Sludger Offline


Registered: 10/04/09
Posts: 3947
Loc: Ohio
IF you have a fleet of dump trucks, then you really should have used oil analysis histories for each of them - the analyses would point out any shortcomings in their current lube service program.
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#4463086 - 07/18/17 04:55 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
userfriendly Offline


Registered: 06/03/03
Posts: 2630
Loc: LaFinDuMonde
I think you are spending too much money on engine oil in the belief that synthetics are better in your application.
Chevron (Caltex) did an engine tear down of 2 identical engines, one that ran on 5w40 and the other 15w40.
After 1m kms, 600k miles, both engines showed very little wear. I posted the video a couple of times.

edit; a different video with an MTU engine and Mandarin sub-titles

https://www.youtube.com/watch?v=UyTIpoJRE1E


Edited by userfriendly (07/18/17 05:06 PM)

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#4463158 - 07/18/17 06:21 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
CT8 Offline


Registered: 10/09/14
Posts: 10984
Loc: Idaho
The big 3 oils get the job done. Chevron, Mobile or Shell.
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#4463173 - 07/18/17 06:39 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
A_Harman Offline


Registered: 10/01/10
Posts: 6921
Loc: Michigan
All the engines you mention would do fine on any of the "big 3" HDEO 15w40's. Rotella T, Delo 400, or Delvac 1300. And Kendall Super D-XA would work well, too. Why are you spending extra money on synthetics?
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#4463180 - 07/18/17 06:53 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
userfriendly Offline


Registered: 06/03/03
Posts: 2630
Loc: LaFinDuMonde
Not meant to be Chevron VS the other guys, but conventional vs synthetic.
To top it off, I need a multi-grade vs mono-grade video.
How about a 16-645 EMD running on SAE 40 since 1965?

https://www.youtube.com/watch?v=GYb_96D6GdA

That Scottish lad sounds just like my grandmother from Dumfries.


Edited by userfriendly (07/18/17 06:54 PM)

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#4463184 - 07/18/17 06:56 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
bullwinkle Offline


Registered: 10/09/04
Posts: 7671
Loc: Cincinnati, OH, USA
T6 seems a little too shear prone for my tastes-a 55 gallon drum of any decent CI-4, CJ-4, or CK-4 15W40 from any of the big 3 would be just fine for your application, unless you plan on starting unplugged in -15F or colder weather. I use TDT 5W40 myself, but only in a CR Cummins that is finicky starting cold or partially warmed up. The older stuff gets straight 30, 15W40, or 10W30 (in winter) dino, all the way. I would add the Conoco/Phillips oil to the list, too-if I ever run low, I can get a good deal on Kendall or Gulf from a local distributor (Aero Oil).


Edited by bullwinkle (07/18/17 06:58 PM)
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#4463200 - 07/18/17 07:09 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
OLEJOE Offline


Registered: 05/16/15
Posts: 69
Loc: Louisiana
I drive for an LTL trucking company and we run C13 Cats, some Mercedes engines and D15 Detroit's. They all get Mobil Delvac 1300 15W-40. They do a 50,000 mile OCI on the Detroit's and 30 or 40,000 on the others. We have very, very few oil related malfunctions.Last CAT I had had 895,000 miles on it when I got my first Detroit. It had 838,000 on it when I got my second Detroit and I have 430,000 on it so far. Zero oil related failures. The Mobil Delvac CJ-4 has also significantly reduced our DPF problems.I use Mobil Delvac MX 15W-40 in my John Deere.
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#4463219 - 07/18/17 07:31 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
NStuart Offline


Registered: 12/28/16
Posts: 278
Loc: Sav ga
How many mile are y'all going before you change the oil
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#4463234 - 07/18/17 07:52 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
OLEJOE Offline


Registered: 05/16/15
Posts: 69
Loc: Louisiana
50,000 on the D15 Detroits. I think any of the major oil brands, and some of the store branded oils, would do good for you. Used Oil Analysis for each vehicle would be an exceptional benefit for you. I think the number one thing you could do, would be to inspect the intake systems on your trucks since they are in and around a lot of dirt. Dirt can only enter an engine through the air intake system. Feed it clean air, clean fuel and service it on a regular basis, it will run a long time.
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#4463235 - 07/18/17 07:53 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
I'm going to choose Chevron 15W-40 for you. We'll see if anybody disagrees. wink2

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#4463238 - 07/18/17 07:58 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
Fraser434 Offline


Registered: 09/17/11
Posts: 183
Loc: Chicago
Quite an argument, people will say zinc and phosphorus don't matter, I'd say run as much additive as you can. Mobil Delvac MX is API CI4 plus 1500ppm zinc/phos. TBN around 10. That's an additive rich oil.

I'm sure AMSoil makes a CI4 type oil they go up to TBN of 12 with loads of additive, PAO base stock, I'm sure cost wise it's double the cost of the Delvac MX.

CJ4/CK4 oils, Delvac 1 should have some PAO basestock may make it better than T6, which are both great oils. T6 I believe is pure dino hydrocracked group III basestock.

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#4463241 - 07/18/17 08:03 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
userfriendly Offline


Registered: 06/03/03
Posts: 2630
Loc: LaFinDuMonde
Fraser434; Which part of the synthetic vs conventional video ......

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#4463243 - 07/18/17 08:06 PM Re: Pot stirring what's the best oil for heavy duty... [Re: Sledge_Hammer]
4ever4d Offline


Registered: 01/02/10
Posts: 953
Loc: North Carolina
In my 30+ years of trucking I have personally seen more 1,000,000 mile or more engines that spent there life on plain Delo 400 15w-40 than any others. So it gets my vote.
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#4463244 - 07/18/17 08:07 PM Re: Pot stirring what's the best oil for heavy duty... [Re: 4ever4d]
OLEJOE Offline


Registered: 05/16/15
Posts: 69
Loc: Louisiana
Originally Posted By: 4ever4d
In my 30+ years of trucking I have personally seen more 1,000,000 mile or more engines that spent there life on plain Delo 400 15w-40 than any others. So it gets my vote.

There you go.
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