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Old 03-24-2020, 03:00 AM   #41
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Originally Posted by Cypressloser View Post
Correct!!!
These engines are not designed to run on 'dino oil' plus they can go up to 25,000 kms between changes which would be impossible on conventional oil.
That is not correct. Re the OP's truck: FCA's oil recommendation specifies their own unique material spec, an API spec and a Cummins spec. Rotella T4 (petroleum based) meets those specs. With the exception of cold weather ops, FCA does not specify a requirement for synthetic oil. Even the new CGI engines do not specify a synthetic oil for ops at temps above 0F (-18C).

Ergo, a 2019 CTD equipped Ram is capable of attaining a 25K km OCI with petroleum based (dino) oil. OMG!
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Old 03-24-2020, 07:41 AM   #42
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I have a 2017 Ram 3500 with the 6.7 Cummins. I would highly recommend the Chevron Delo 15w-40 oil with the Wix oil filter and factory Mopar fuel filters. Whatever you do, donít cheap out on oil & filters!
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Old 03-24-2020, 07:54 AM   #43
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Just to be clear, the 6.4l engine is not a diesel engine. the Cummings diesel is a 6.7l.
Just to be clear, there is no "G" in CUMMINS.
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Old 03-24-2020, 08:18 AM   #44
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What year is your 3500. Why do you need to add oil. Besides the fact is is low. Is it burning oil, leaking oil......
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Old 03-24-2020, 08:25 AM   #45
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What year is your 3500. Why do you need to add oil. Besides the fact is is low. Is it burning oil, leaking oil......
This question also occurred to me, maybe the OP should determine why his engine is using oil.
OP's Ram is a 2015.
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Old 03-24-2020, 08:38 AM   #46
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Speaking as a Mechanical Engineer any oil that meets the specs is ok, especially if you don’t plan to have the truck for a long time. Cummins engineers think Valvoline is the the best for their Cummins engines. The Cummins site has kits you can buy but are more expensive than Wally World filters and oil. The video explains why Valvoline is the oil of choice.
https://shopcummins.com/collections/...-blue-oil/5w40
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Old 03-24-2020, 09:26 AM   #47
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I thougt the RAM diesel was a 6.7L. There is a gas 6.4L.
We already answered this, keep up.
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Old 03-24-2020, 09:29 AM   #48
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Originally Posted by kandl View Post
That is not correct. Re the OP's truck: FCA's oil recommendation specifies their own unique material spec, an API spec and a Cummins spec. Rotella T4 (petroleum based) meets those specs. With the exception of cold weather ops, FCA does not specify a requirement for synthetic oil. Even the new CGI engines do not specify a synthetic oil for ops at temps above 0F (-18C).

Ergo, a 2019 CTD equipped Ram is capable of attaining a 25K km OCI with petroleum based (dino) oil. OMG!
Thank you for correcting the misinformed.
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Old 03-24-2020, 09:30 AM   #49
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My 2014 Sportscoach motor home with a Cummins ISB 6.7 owners manual states 15W40 with the preferred #1, of course, Cummins, but #2 brand Rotella.

And to correct an earlier post, most diesel oil change intervals are 15,000 miles or yearly. So someone changing their oil at 12,000 is no big deal unless it was the yearly change. This is at least double gas engine requirements and one of the advantages some diesel owners will tout in the many "diesel vs. gas" debates found on this or any motoring forum.

My motor home only has 18,500 miles on it. I bought it used last year at 15,000. With that low mileage and relatively easy use of the Cummins compared to commercial truck applications, the standard 15W40 is fine for me. That being said, coming soon this Spring I will be doing my first oil change myself, just as I did my V10 Ford prior, and if I see a synthetic blend for about the same price as standard oil than I would have no problem buying that. But at the low miles my rig has, in my opinion going big-dollar full synthetic is a waste of money. I probably will never put the high miles on it to justify the added expense, and, most RV'ers probably won't either.
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Old 03-24-2020, 10:29 AM   #50
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We already answered this, keep up.
That is what happens when the OP wasn't paying attention in the beginning.
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Old 03-24-2020, 11:59 AM   #51
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Correction of my prior post. Just re-checked my owner's manual, and it states as the preferred oil Valvoline Premium Blue 15W40.
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Old 03-24-2020, 07:16 PM   #52
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Originally Posted by Jhenson2211 View Post
I have a 2017 Ram 3500 with the 6.7 Cummins. I would highly recommend the Chevron Delo 15w-40 oil with the Wix oil filter and factory Mopar fuel filters. Whatever you do, don’t cheap out on oil & filters!
Fleetgurard Stratapore filters for me....https://www.genosgarage.com/product/...er/oil-filters
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Old 03-24-2020, 11:15 PM   #53
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Oh dang

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Originally Posted by jrk341 View Post
Just to be clear, there is no "G" in CUMMINS.
You would think that someone who made parts for them would learn to not trust the spellcheck on that one.
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Old 03-25-2020, 10:02 AM   #54
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The black color in diesel engine oil is due to the blow-by in the compression/oil rings in a diesel. The blow-by is necessary due to the high compression ratios that diesels require to develop the torque to do the job, otherwise the engine would sieze.

What in the world... not sure where you got that info but none of it is correct.

The oil is black with modern diesels due to the use of EGR which causes excessive soot to get into the oil. With EGR disabled the oil in a modern HPCR diesel stays much cleaner for much longer.

Blowby is necessary to prevent the engine from seizing? What...
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Old 03-25-2020, 11:30 AM   #55
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Originally Posted by DieselDrax View Post

With EGR disabled the oil in a modern HPCR diesel stays much cleaner for much longer.
What is EGR and how is it disabled?
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Old 03-25-2020, 11:33 AM   #56
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Originally Posted by DieselDrax View Post
What in the world... not sure where you got that info but none of it is correct.

The oil is black with modern diesels due to the use of EGR which causes excessive soot to get into the oil. With EGR disabled the oil in a modern HPCR diesel stays much cleaner for much longer.

Blowby is necessary to prevent the engine from seizing? What...
It's scary what some people put out there. There is nothing accurate with what he posted.
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Old 03-25-2020, 11:34 AM   #57
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What is EGR and how is it disabled?
EGR is "Exhaust Gas Recirculation" which pipes exhaust gas through the EGR cooler and back into the combustion chamber, it is used to lower combustion temperatures which reduces the production of NOx emissions.

To disable EGR you need an aftermarket tune for the engine that disables it.
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Old 03-25-2020, 11:38 AM   #58
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Originally Posted by DieselDrax View Post
EGR is "Exhaust Gas Recirculation" which pipes exhaust gas through the EGR cooler and back into the combustion chamber, it is used to lower combustion temperatures which reduces the production of NOx emissions.

To disable EGR you need an aftermarket tune for the engine that disables it.
Since my 2015 RAM is no longer under warranty, is that something I should consider? When I was at one dealer, he told me to have something removed after truck is out of warranty so that I no longer have to use DEF. Is this the same thing?

Thank you.
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Old 03-25-2020, 11:42 AM   #59
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The black color in diesel engine oil is due to the blow-by in the compression/oil rings in a diesel. The blow-by is necessary due to the high compression ratios that diesels require to develop the torque to do the job, otherwise the engine would sieze.
All I can say to that is WOW!

Nowhere during all my life have I heard that explanation of the reason for soot.
All this time I thought oil was lubricating the piston and cylinder walls.

I guess you learn something every day .
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Old 03-25-2020, 11:46 AM   #60
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Since my 2015 RAM is no longer under warranty, is that something I should consider? When I was at one dealer, he told me to have something removed after truck is out of warranty so that I no longer have to use DEF. Is this the same thing?

Thank you.

There are various levels of disabling and "deleting" emissions parts out there, but since the EPA cracked down on tuning companies and manufacturers of exhaust parts that replace emissions components it's pretty hard to get what you need without heading to Canada.


The most basic and easiest mod is an "emissions-intact" tune. These will bump up HP/torque and often times include the disabling of the EGR and DEF injection.


There are also "delete" tunes that disable EGR and DEF systems as well as all of the DPF sensors and allow you to completely remove the DPF, EGR, and DEF/SCR systems.


There are variations of these depending on who provides the tune and often times you can do it in phases with minimal additional cost for having the tune updated to accommodate the changes you're wanting to make.


This was all relatively easy to do a year ago, but today you're at the mercy of what is available from tuners/vendors up in Canada or people/companies willing to risk being sneaky here in the US.


Disabling or removing emissions components isn't legal but so far I'm not aware of vehicle owners being fined, only the companies providing the ability to do this.
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